Omar often saw woodpeckers perched in trees in his backyard, but he never saw them at his bird feeders. Omar usually filled his feeders with sunflower seeds. He wondered if he could attract woodpeckers by adding a different type of food to the feeders.
To test this idea, Omar gathered eight identical bird feeders. He filled four with sunflower seeds. He filled the remaining four feeders with crushed peanuts. Omar then placed the bird feeders in his backyard. Over the next five days, he counted the number of woodpeckers that visited each bird feeder each morning.
Which of the following was an independent variable in this experiment?

Answers

Answer 1

Answer: The food

Explanation: the independent variable is the one to be changed and in this case, it is the food


Related Questions

Describe/draw/label in detail the process of Transcription & Translation. Make
sure to identify all key items and their roles.

Answers

Answer:

Through the Transcription & Translation, protein is synthesized

Explanation:

In the process of transcription, DNA is copied to mRNA. It is the mRNA that carries information about the protein synthesis. It has two steps – a) Formation of pre messenger RNA with the help of RNA polymerase enzymes and b) Edition of pre messenger RNA to produce desired RNA known as splicing.  

In translation, mRNA is transported out of nucleus to the ribosome for the synthesis of proteins. tRNA is required for transportation.  

Let the genomic sequence to be transcribed by –  

3’ – TAA CGC CGT TCG TCA – 5’

The transcribed mRNA sequence would be  

5’ – AUU GCG GCA AGC AGU – 3’

The translated genomic sequence is  

Ile Ala Ala Ser Ser  

5. The occurrence of large or small beak sizes among seed crackers in the absence of
medium sized beaks is an example of
I
a. directional selection.
b. stabilizing selection.
c disruptive selection.
d. none of the above.

Answers

Answer:

Disruptive selection

Explanation:

Disruptive selection favors both of the extremes ( large and small beaks) Thank me later:)

The occurrence of the large or small beak sizes among the seed crackers is the illustration of disruptive selection.

What is disruptive selection?

It is the kind of natural selection, which is bimodal and favors both the extremes traits within a population. It is a kind of natural selection, which opts against the average individual within a population. This kind of selection would show the phenotypes demonstrating both the extremes, however, exhibit very less individuals in the middle.

A classic example of disruptive selection is the size of the beak of the finches on the Galapagos Islands. As the majority of the seeds found these islands were either small or large, therefore, finches with small and large beaks were favored on those islands.

Thus, the correct answer is option c, that is, disruptive selection.

Find out more information about disruptive selection here:

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A boundary between nonsedimentary and sedimentary rocks is an example of which type of unconformity?



Answers

Answer:

Disconformity

Explanation:

Disconformity is the breaking end between non sedimentary and sedimentary rocks. It is when parallel layers between sedimentary rocks have no contacts with each other which indicate period of erosion or non disposition.

Answer:

nonconformity

Explanation:

Yoghurt contains living bacteria. Bacteria are also capable of anaerobic respiration. If a sealed carton of yoghurt is left for a long time, the lid bulges upwards. Why does this happen?

Answers

The bacteria is expanding underneath the surface of a container that is sealed, also the bacteria is spreading so it makes more room
by pushing the lid upwards

​What are 3 potential solutions to stop heat waves? (what solutions are cities looking at) IN DETAIL

Answers

Answer:

Increase shade around your home

Install green roofs.

Install cool roofs.

(07.06 MC)
Which of the following describes how polluted water sources would most likely affect
one's personal health? (5 points)

Answers

Answer:

Pathogens would invade the body and cause disease, such as giardia" is the one among the following choices given in the question that describes how polluted water sources would most likely affect one’s personal health. The correct option among all the options that are given in the question is the last option or the fourth option.

Read more on Brainly.com - https://brainly.com/question/2004947#readmore

Explanation:

Answer:

Incomplete questions

Explanation:

Incomplete questions.

The height above the ground. *

Answers

Answer is

Altitude.

.........

Several uses of Fungi are...

A) They are used in making bread and cheese
B) They are used in making some medicines
C) They reproduce by spores
D) They are the decomposers in many ecosystems

Answers

Answer:

They are used in making bread and cheese, They are used in making some medicines, They are the decomposers in many ecosystems.

Explanation:

Two heterozygous purple-stemmed plants are grown. Each parent has the genotype ANL/anl. Pollen from one of the plants is used to pollinate the other, and the resulting seeds are harvested. What traits would you expect in the plants grown from these seeds? A. All of the offspring plants will have purple stems. B. All of the offspring plants will have green stems. C. About half of the offspring plants will have purple stems, and half will have green stems. D. Most of the offspring plants will have purple stems, but some will have green stems.

Answers

Answer:

D. Most of the offspring plants will have purple stems, but some will have green stems.

Explanation:

These plants are heterozygous, which means that they have two different alleles of the same gene. One allele, the ANL one, is going to dominate over the other resulting in purple-stemmed plants, which is the color that ANL encodes for.

If we draw a Punnet Square, we can see that the majority of the offsprings will have purple stems, but some of them, the ones that have two recessive alleles, will have green stems.

ANL ANL: purple stemsANl anl: purple stemsanl ANL: purple stemsanl anl: green stems

      ║     ANL    ║    anl

ANL║ANL ANL ║ ANL anl

anl  ║anl ANL    ║anl anl

Match each term to the correct definition.
asymmetry
an animal without a backbone
bilateral symmetry
an animal with a backbone
radial symmetry
a body plan made of two equal halves that
mirror each other
OOOO
vertebrate
a body plan that lacks symmetry
invertebrate
a body plan that is organized around a
central point

Answers

Hii!! (: The correct answers are:

Asymmetry- A body plan that lacks symmetry

Bilateral Symmetry- a body plan made of two equal halves that mirror each other

Radial Symmetry- a body plan that is organized around a central point

Vertebrate- an animal with a backbone

Invertebrate- an animal without a backbone

A bodily layout with no symmetry is called asymmetries. A body plan with bilateral symmetry has two equal halves that are mirror images of one another.

What is Symmetry?

A body plan that is structured around a central point is known as radial symmetry. Vertebrate: a backboned animal. An animal without a backbone is an invertebrate.

In biology, symmetry is the ordered repetition of parts in an animal or plant. In more detail, symmetry refers to a correspondence of bodily components on opposing sides of a dividing line or spread around a central point or axis that match in size, shape, and relative location.

With the exception of radial symmetry, exterior form and interior anatomy are rarely related because the same sort of symmetry can exist in animals with quite distinct anatomical structures.

Therefore, A bodily layout with no symmetry is called asymmetries. A body plan with bilateral symmetry has two equal halves that are mirror images of one another.

To learn more about Bilateral symmetry, refer to the link:

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Organ systems work together to meet the needs of the human body. How is the
skeletal system related to the nervous system?

A.The skeleton protects the brain and spinal cord.

B.The brain determines how the skeleton develops.

C.The brain and spinal cord hold the skeleton together.

D.The skeletal system works as a part of the nervous system.

Answers

Answer:

C

Explanation:

which of the following steps happens first during transcription?

Answers

Answer:

RNA polymerase attaches to the promoter.

Explanation:i just did it

The following steps happen first during transcription: the RNA polymerase reaches the beginning of a gene that is the second option (B), as the beginning of a gene is the promoter.

What is the significance of the transcription initiation?

Transcription initiation has many implications, such as the fact that prokaryotic initiation is different from eukaryotic initiation, where the RNA polymerase first binds at the promoter site of the gene, where it starts moving towards the gene, and then after reaching the termination site, the transcription stops. In this process, the final product is mRNA from DNA.

Hence, the following steps happen first during transcription: the RNA polymerase reaches the beginning of a gene that is the second option, as the beginning of a gene is the promoter.

Learn more about transcription initiation here.

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How does the ozone layer affect life on Earth? (Site 1)


Answers

by its refraction

Explanation:

ozone layer affect life on earth by its upcoming refraction to the living life of earth

Answer:

ozone layer affect life on earth by its upcoming refraction to the living life of earth

Explanation:

Edge

Which statement accurately describe animals? Check all that apply

Answers

it should be the letters B,C,E

Answer:

the 2, 3, and 5.

If two parents have brown eyes and their baby has blue eyes, what are the genotypes of the parents and what are the possible allele combinations for each of the genes: HERC2 - OCA2

Answers

Answer:

Bb, bb

Explanation:

The kid has the resesive ( idk how to spell it sorry) traits of the parents, so, both parents have to have resesive traits.

Have a great day

help urgent
Which environment was this prey found in? meadow evergreen forest marsh woodland

Answers

Answer:

This prey would be found in woodland.

Answer:

D. Woodland

Explanation:

:(:

What is used to show alleles (different forms of genes) in a genetic diagram

Answers

Explanation:

pls ☺️☺️☺️

PLS HURRY!!
How are spring and neap tides different from regular tides? Check all that apply.

They occur twice a day.
They are caused by wind.
They occur twice a month.
They are extra-high tides and extra-low tides.
They are caused when the Sun and the moon align and exert additional gravitational pull.

Answers

Answer:

1.They occur twice a month.

2.They are extra-high tides and extra-low tides.

3.They are caused when the Sun and the moon align and exert additional gravitational pull.

Which statement best describes the relationship of photosynthesis and energy?
The process of photosynthesis is energy-storing because the process converts light energy into chemical ene
stored in the bonds of glucose.
The process of photosynthesis is energy-releasing because the process converts light energy into free energy
used for cell functions.
The process of photosynthesis is energy-conserving because no energy is used throughout the process of for
glucose and oxygen molecules.
The process of photosynthesis is energy-wasting because photosynthesis is an inefficient process that deplet
energy stored in the bonds of glucose.

Answers

Answer:

The process of photosynthesis is energy-releasing because the process converts light energy into free energy

used for cell functions.



A student was observing slides of cell division. In one of the slides, he noticed loosely coiled chromatin depicting DNA duplication. Which phase of the cell cycle could it be?

A.
S phase
B.
Metaphase
C.
M phase

Answers

Answer:

A. S phase

Explanation:

The cell cycle involves all the series of division events that occurs to an organism. Cell division, which can be meiosis or mitosis, involves two main stages viz: Interphase and M phase.

Interphase describes the resting stage of the cell i.e. when the cell is not dividing. The cell uses this time to prepare itself for the next round of division. Interphase stage further consists of three main phases viz: G1, S and G2 phases.

In the S phase or synthesis phase of Interphase, the cell duplicates its genetic material (DNA). Hence, an onion cell observed by a student to have loosely coiled chromatin depicting DNA duplication is in the S-PHASE.

What step in the water cycle moves water from ponds and lakes into the air Afreezing B condensation cevaporation dmelting

Answers

Answer:

Water from ponds and lakes is moved into the air during evaporation. During the process of evaporation, water changes from a liquid (water) to a gas (water vapor).

Explanation:

that is the correct answer

C is the correct answer

What condition is required for fermentation to occur? A. When oxygen levels within a cell are too low for aerobic respiration B. When the energy production cycle ends of the Krebs cycle C. When a glucose molecule needs to break down completely D. When 20 molecules of ATP are needed\

Answers

Answer:

A. When oxygen levels within a cell are too low for aerobic respiration

Explanation:

Fermentation is a chemical or metabolic process that occurs in organism, when a carbohydrate such as glucose is metabolized or converted to an alcohol anaerobically (absence of oxygen).

When an organism lacks oxygen within the cell, aerobic respiration would be halted, hence pyruvate produced from glucose further undergoes fermentation anaerobically.

Organisms like lactic acid bacteria and yeast carry out fermentation. The process of fermentation is widely used in food industries, such as in brewing of wine or manufacture of yogurt.

Where are the proteins for a cell made?
mitochondria
cytoplasm
nucleus
ribosomes

Answers

Answer:

The proteins for a cell are made of ribosomes.

Answer:

the answer is Ribosomes

Why does antibiotic resistance occur so quickly

Answers

Answer:

When any pathogen enters our body , our immune system in response to pathogen releases antibodies. But if it fails , antibiotics are given.. Thus the resistance to antibiotic comes and so quickly

Answer:

Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections.

How is water introduceed into rivers and streams

Answers

Answer:

As the water flows down, it may pick up more water from other small streams, springs or or from rain or snow melt. ... Small rivers and streams may join together to become larger rivers. Eventually all this water from rivers and streams will run into the ocean or an inland body of water like a lake.Water can be introduced into rivers and streams through surface runoff, springs, groundwater discharge, melting ice and snow, and precipitation. ... The water at the source of the river has high oxygen content, but the width and depth are typically less than they are in the middle sections. The most simplistic answer is that all the water in a river comes from the sky—and that is certainly true, as streamflow is one part of the water cycle. It is also true that most of the water flowing in rivers comes from precipitation runoff from the surrounding landscape (watershed).

state two outcomes of ecological succession​

Answers

Answer:

There are two main types of succession, primary and secondary. Primary succession is the series of community changes which occur on an entirely new habitat which has never been colonized before. For example, a newly quarried rock face or sand dunes.

Explanation:

hope this helps

What is an ecosystem and what does it consist of?

Answers

Answer:

An ecosystem is a large community of living organisms (plants, animals and microbes) in a particular area. The living and physical components are linked together through nutrient cycles and energy flows. Ecosystems are of any size, but usually they are in particular place. An ecosystem consists of the biological community that occurs in some local, and the physical and chemical factors that make up its abiotic(non-living) environment. There are many examples of ecosystems -- a pond, a forest, an estuary, a grassland.

Explanation:

Hope something in there helps:)

Phenotype is the physical representation of a genotype. TRUE OR FALSE?

Answers

Answer:

true

Explanation:

i guessed i don't actually know what the answer is but hey its a 50/50 chance so go for a guess

A severe drought has dried up a river and caused the land to crack. The drought will most likely affect...


A: plants but not animals
B: plant and animals
C: neither plants nor animals
D: animals but not plants​

Answers

Answer:

Plants and animals

Explanation: animals wont be able to get water to drink and plants wont be able to absorb water into their roots to grow

“A mound of coal sitting in a field ____."

Answers

Answer:is storing potential energy

Explanation:

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The primary coil of a transformer has 200 turns and the secondary coil has 800 turns. The power supplied to the primary coil is 400 watts. What is the power generated in the secondary coil if it is terminated by a 20-ohm resistor? The primary coil of a transformer has 200 turns and the secondary coil has 800 turns. The power supplied to the primary coil is 400 watts. What is the power generated in the secondary coil if it is terminated by a 20-ohm resistor? 20W 200W 400W 800W 8000W 16000W 32000W\ Given the following formula, solve for m.y=mx+bA.m=x(y-b)B.m= y-b/xC.m= x(y+b)D.m= y+b/x 7a 3 = 3 + 6a answer i already know it is 6 What is the motion of the particles in this kind of wave?A hand holds the left end of a set of waves. The waves themselves make a larger set of waves in the same direction as that of the smaller waves. A label Wave motion is above the series of waves and an arrow next to the label points right.A) The particles will move up and down over large areas.B) The particles will move up and down over small areas.C) The particles will move side to side over small areas.D) The particles will move side to side over large areas. Which sentence creates a logical comparison?New Yorks skyscrapers are taller than in London.New Yorks skyscrapers are taller than Londons.New Yorks skyscrapers are taller than London.New Yorks skyscrapers are taller than London is. A local kids play sold 8 adult tickets and 9 child tickets for a total of $205. On day two they sold only 4 adult tickets and 3 child tickets for a total of $83. What was the price of each kind of ticket? Pretty tricky, first correct answer will get brainliest If youre young and jump forward a little bit when you shoot, thats fine.From the passage, what can you infer?a. Younger basketball players cannot make free throw shots.b. It is likely an older player will no longer jump forward.c. Younger players should practice until they do not jump forward anymore.d. Older players jump forward much more than younger players. or False: The following statement accurately describes how firms make decisions related to issuing new common stock. Taking flotation costs into account will reduce the cost of new common stock. True: Taking flotation costs into account will reduce the cost of new common stock, because you will multiply the cost of new common stock by 1 minus the flotation costsimilar to how the after-tax cost of debt is calculated. False: Flotation costs are additional costs associated with raising new common stock. which body system is responsible for transporting blood to other parts of your body? For which process are some plant-eating organisms dependent on microorganisms? *causing diseasedigesting foodproviding shelterproducing waterHow does the need to belong contribute to a culture of football hooliganism? The average human gestation time is 266 days from conception. A researcher suspects that proper nutrition plays an important role and that low-income women with inadequate food intake would have shorter gestation times even when given vitamin supplements. A random sample of 20 low-income women who were given vitamin supplement throughout their pregnancy had a gestation time from conception of x - 256 days The researcher's alternative hypothesis for the test is:______. a. Ha : =/ 256. b. Ha: = 266. c. Ha : < 266. d. Ha : < 256. Which statement best explains why this is a weaksupporting image for Years of Dust?It does not show a person affected by the Depression.o It does not show a migrant worker with several youngchildren.o It does not show how the Dust Bowl changed people'slives.It does not show how people live on the Great Plainstoday.Photo by Arthur Rothstein What is the reference angle for a 240 angle? To determine if something is a living organism,you could check to see if it responds to itsenvironment.TRUEFALSE Find the lateral surface area of the cylinder. Round your answer to the nearest tenth. What number is opposite of 98 Choose the correct correspondence. U T S R When two alleles "blend in" , or "mix" together it is known as -Incomplete dominanceCodominance Hurry will give brainliest is correct!!Which turn of the century political movement emphasized conservation?a. Progressiveb. Democraticc. Republicand. PopulistThese factors contributed to the U.S. decision to go to war against Spain in 1898. a. the explosion on the USS Maine and yellow journalismb. preventing Spain from attacking the United Statesc. a treaty agreement with England and President's Wilson dislike for Spaind. stopping Cuba from nationalizing U.S. businesses