Loretta and her friends want to find out which of their pets can run the fastest. Which kind of scientific investigation should they use?

A.

a controlled experiment

B.

development of a model

C.

a review of existing work

Answers

Answer 1
they should do A, a controlled experiment

Related Questions

How can you one second law of motion be represented within equation

Answers

Newton's second law of motion is F = ma, or force is equal to mass times acceleration. Learn how to use the formula to calculate acceleration.

I WILL GIVE YOU BRAINLIEST. And you have to all of the words below

For this assignment, you will use the following vocabulary to write a short story. Be creative!

The vocabulary list is: parasitism, adaptations, biotic factor, abiotic factor, energy, predator, commensalism, population, ecosystem, biodiversity

You must choose an ecosystem and begin your story like this... I was enjoying my vacation at (ecosystem) when suddenly...

Answers

Answer:

blah blah blah blah

Explanation:

that's stupid who would do that lol

Why do globes lean sideways?


A.To allow them to spin easier

B.To demonstrate gravity

C.To demonstrate the passing of the seasons

D.To demonstrate the tilt of the Earth's axis

Answers

Answer:

D

Explanation:

Globes lean sideways To demonstrate the tilt of the Earth's axis. Option D is correct.


Globes lean sideways to demonstrate the tilt of the Earth's axis. The Earth is tilted on its axis by about 23.5 degrees. This tilt is what causes the changing seasons on Earth.

When a globe is tilted, it helps us visualize how different parts of the Earth receive different amounts of sunlight at different times of the year. For example, during the summer in the northern hemisphere, the North Pole is tilted towards the Sun, so it receives more direct sunlight and experiences warmer temperatures. At the same time, the South Pole is tilted away from the Sun, receiving less direct sunlight and experiencing winter.

By showing the tilt of the Earth's axis, globes help us understand why we have seasons and why they occur at different times in different parts of the world.

To summarize, globes lean sideways to demonstrate the tilt of the Earth's axis, which helps us understand the changing seasons on Earth. Option D is correct.

To know more about Earth's axis:

https://brainly.com/question/14639935

#SPJ6

if a full moon was just witnessed on earth when will the next full moon be visible

A)2 weeks
B)7 days
C)28 days
D)3 weeks

Answers

Answer:

Most likely 28 days

Explanation:

This is because the cycle of the moon is 28 days. After a full moon, the cycle has completed and thus, must start again from the beginning, taking another 28 days.

I hope Im correct

Which one of these is an example of a biome?
oak tree
ocean water
a mountain range
desert

Answers

Answer:

Desert

Explanation:

pls mark brainliest

Transgenic plants have DNA from another organism inserted into its genome. The main benefit of using transgenic plants in crop production is

a to cause allergic reactions in people
b to reduce world hunger and malnutrition
c to create unknown wild hybrids
d to create unintended consequences in ecosystems

Answers

The purpose of inserting a combination of genes in a plant, is to make it as useful and productive as possible. This process provides advantages like improving shelf life, higher yield, improved quality, pest resistance, tolerant to heat, cold and drought resistance, against a variety of biotic and abiotic stresses.

Therefore, this plant could be used to reduce world hunger and malnutrition

True or False: Glycogen, Starch, and Cellulose are all polysaccharides.

Answers

True it the right answer I guess

What is one of the most threatened ecosystems in the United States ?

Answers

Answer:

Caribbean coral reefs

Explanation:

and unfortunately many more :´(

The answer is the artic sea ice
I had the same question

Which of the following statements best shows why it would be winter in the
southern hemisphere and summer in the northern hemisphere?

Answers

Answer:

If it says something about the Earths axis then that would be the answer

Explanation:

The Earth is on a bit of a tilt.

Which of the following is the best evidence that Earth’s continents were once in vastly different positions than they are today? a. Penguins are found only in the Southern Hemisphere. b. Fossils of tropical plants are found in c. Volcanoes encircle the Pacific Ocean. d. Major rivers form deltas from continental erosion. explain for every answer PLEASE I NEED IT IS DUE TODAY!!!!!!!!!!!!!!!!

Answers

Answer:

whats the full answer for b I think its your best bet

Movement of materials into and out of cell from high to low is called.....

Answers

Answer:

Diffusion. The net movement down a concentration gradient, from high to low concentrations.

Explanation:

Is the animal cell unicellular or multicellular.

Answers

Answer:

Most of them are unseen, visible only under a microscope. These tiny organisms are unicellular, composed of only a single cell. The familiar plants, animals and fungi that we can see represent only a tiny fraction of life on Earth. These organisms, being made of more than one cell, are called multicellular.

Explanation:

11
chemo pollution Harmful chemicals added to water supplies
12
Live or dead organisms are added to water supplies
13
Increase of nutrients in the water, results in overgrowth of algae and
decrease of oxygen in the water
14
The land that water flows across, through, or under on its way to a stream,
river, lake or closed basin.
15
well
A hole drilled down into an aquifer.
16
An underground layer of permeable rock that fills with water from melted
snow or rain that drains into the ground, act as reservoirs for groundwater
17
A description of how well a rock or sediment lets water pass through

Answers

Answer:

11.Chemical Pollution 12.Non-Point source pollution 13.Euthrophication 14.Watershed 15.Well 16.Water Table 17.Permeability

Please help!!!!!! Here’s a picture!!!! HELP all my points


Match each term with its definition.

Answers

Water; Inorganic compound

Oxygen; Element found in water

Carbon; Element that is part of most organic compounds

Carbohydrate; Energy-rich organic compound

Hope that helped!

Which is one way that the movement of matter through an ecosystem is different from the transfer of energy?
A. Only the movement of matter involves living things.
B. Only the movement of matter flows in one direction only.
O
C. Only the movement of matter occurs in an unending cycle.
o
D. Only the movement of matter involves feeding relationships.

Answers

Answer:

The answer is C. the movement of matter occurs in an unending cycle.

Answer:

Only the movement of matter occurs in an unending cycle.

just took the test

proteins that act as catalysts in biological reactions

A. glucose
B. enzyme
C. ATP
D. molecule
PLS ANSWER ITS URGENT

Answers

C is the correct answer

Help ASAP!!! You’ll get brainiest if you do it right!

What is the complementary DNA strand TAC GGC CGT TAT

Answers

the answer should be ATG CCG GCA ATA

Answer:

1a. The template DNA strand, from which the mRNA is synthesized, is 5’ CAAACTACCCTGGGTTGCCAT 3’

(RNA synthesis proceeds in a 5’ à 3’ direction, so the template strand and the mRNA will be complementary to each other)

b. The coding DNA strand, which is complementary to the template strand, is 5’ ATGGCAACCCAGGGTAGTTTG 3’

c. The sequence of the mRNA is 5’ AUGGCAACCCAGGGUAGUUUG 3’

(the sequence of the mRNA is complementary to the template strand and identical to the coding strand with U substituted for T)

d. The third codon is 5’ ACC 3’. Therefore, the corresponding anti-codon is 5’ GGU 3’

Why does the cell membrane need proteins embedded in it?

Answers

Answer:

Transporter or Carrier Proteins. They are embedded in the cell membrane to help transport glucose and amino acids across the membrane. They are too large to go through ion channels.

Explanation:

Xylem tissue and phloem tissue make up a plant's transport system, A. true B. false​

Answers

Answer:

true.

Explanation:

PLEASE HELP!!!!!!!!!!!!!!!!!!!! WHAT IS THE CONTROL GROUP FOR THIS


Hypothesis:
In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
If predators are increased, then the cricket frog population will (increase/decrease/stay the same) over the span of five years.
If pollution is increased, then the cricket frog population will (increase/decrease/stay the same) over the span of five years.
If the amount of food available is increased, then the cricket frog population will (increase/decrease/stay the same) over the span of five years.

Procedure:
The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable), outcome variable (dependent variable), and control group for this experiment.
Reminder: The test variable is the item that is changing in this investigation. The outcome variable is the item that you are measuring in this investigation. The control group is the group in the experiment where the factors being tested are not applied. It allows scientists to set a baseline to compare the experimental groups that do have factors applied to them.
Test variable (independent variable): Limiting factor- Food, Pollution, Predators.
Outcome variable (dependent variable): Cricket Frog (population)
Control group:

Answers

Answer:

decrease

decrease

increase

control group is the cricket frog population

Explanation:

Its the group that is being measured.

Answer:

Limiting factor- Food, Pollution, Predators.

Outcome variable (dependent variable): Cricket Frog (population)

Control group: Cricket Frogs in the Florida Everglades without changes in or manipulation of the population.

I Hope It Help's! :)

Prokaryotic cells _______ have a nucleus or membrane bound organelles.

Answers

Answer:

Prokaryotic cells *dont* have a nucleus or membrane bound organelles.

Explanation:

Prokaryotic cells do not have a nucleus; rather, they have a membraneless nucleoid region (open part of the cell) that holds free-floating DNA.

hope this help!

does anyone know if this is right??!!

Answers

its correct

hope this helps

Two photographers take time-lapse photos of the night sky. One of them is at the equator. The other is at the south pole. Which photo will show stars that never rise or set? Explain

Answers

Answer: South pole.

Explanation:

The equator is filled with non-circumpolar stars which means the stars sets in the sky. The north and south pole is full of circumpolar stars which means they never set.

If two photographers take time-lapse photos of the night sky with one being at the equator and the other at the south pole, the photo by the photographer at the south pole will show stars that never rise or set.

The stars that never rise or set is known as the circumpolar stars and are usually found close to either of the earth's poles - north or south pole.

This means that the photographer at the equator which is an equidistance from the two poles will not be able to capture the circumpolar stars.

More about circumpolar stars can be found here: https://brainly.com/question/15993771

What type of bond is shown below, where a weak attraction occurs between hydrogen and oxygen atoms in different water molecules?
A. Covalent
B. Ionic
C. Hydrogen
D. Magnetic

Answers

C: hydrogen bonding (a type of intermolecular attraction, i.e., between atoms of different molecules).

why are there mosquitos

Answers

Answer:

To balance the food chain.

Explanation:

Mosquitoes actually play a big part in the food chain.. Animals such as frogs eat them, and what if other foods that frogs eat go out(Not saying it's gonna happen, its just a what-if)? They will have to resort to the mosquitoes. And if those were gone, the frogs would go out. Then a certain number of animals maybe maybe not would have to develop a new diet due to the extinction of frogs.  

Answer:

i have no clue. i hate mosquitos.

PLEASE ILL GIVE YOU A BRAINLIEST

please answer these questions

Answers

Answer:

I don't understand your question

That’s the First sum I don’t know..... If anyone could tell me. What’s is a “Altitude of Polaris”?

Can some help me? Please, due in 10 mins.

Answers

Answer:

C

Explanation:

If i were to explain i would be here all day and i have to go to town, contact me for an explanation.

In scientific notation, a number is expressed as a value between 1 and 10
multiplied by a power of 10 *
True or false

Answers

The answer is true

Explanation:

The definition of scientific notation is: The method of writing very large or small numbers as a product of a number greater than or equal to 1 and less than 10 multiplied by a power of 10

Hope this helped!

The given statement about scientific notation is true which states that in scientific notation, a number is expressed as a value between 1 and 10 multiplied by a power of 10 .

What is scientific notation?

Scientific notation is defined as a way of expressing numbers which are too large or too small so that they can be easily written in decimal form. It can be referred to the scientific form or the scientific index form or even the standard form.

Base ten notation is used by scientists, engineers as it helps in simplification of arithmetic operations. It contains the significant figures which include all non-zero numbers , the zeroes between significant digits and zeroes which are needed to be significant.

In scientific notation, the base should always be ten. The exponent should be a non-zero integer and it can be either positive or negative.

Learn more about scientific notation,here:

https://brainly.com/question/18073768

#SPJ2

A segment of DNA that stores genetic information is...?

Answers

Genes stores genetic information

PLEASE HELP!!! YOU'LL GET BRAINLIEST

A sample of seaweed contains two liters of water and has 100 grams of salt dissolved in its cells. The seaweed is placed in a bucket with 4 liters of water and 300 grams of dissolved salt. What will occur when the system reaches equilibrium?
The seaweed will absorb 1.0 liters of water.
The seaweed will absorb 40 grams of salt.
The seaweed will lose 0.5 liters of water.
The seaweed will absorb 5.5 liters of water.

Answers

Answer:

The seaweed must lose

0.5 L

of water in order for equilibrium to be established.

Other Questions
Do you feel that the British were justified in constructing a fortress in Halifax? where do juguar lives The function f(x) = 100x + 300 represents the cost for the physics club to attend science weekend atthe local theme park where x represents the number of students who attend. At least 4 students butno more than 9 students will attend the fieldtrip due to transportation and chaperone restrictions.9. Is this a discrete or continuous situation? Explain. Some of my pleasantest hours were during the long rain-storms in the spring or fall, which confined me to the house for the afternoon as well as the forenoon, soothed by their ceaseless roar and pelting; when an early twilight ushered in a long evening in which many thoughts had time to take root and unfold themselves. In those driving northeast rains which tried the village houses so, when the maids stood ready with mop and pail in front entries to keep the deluge out, I sat behind my door in my little house, which was all entry, and thoroughly enjoyed its protection.Which is the best example of a vivid sensory detail?Some of my pleasantest hours were during the long rain-storms in the spring or fallwhich confined me to the house for the afternoon as well as the forenoonwhen the maids stood ready with mop and pail in front entries to keep the deluge outI sat behind my door in my little house, which was all entry, and thoroughly enjoyed its protectio What evidence reveals the 10th Jurors bias towards the boy? How does the 9th Juror respond? What does this reveal about him? In 12 angry men is this a sentence? I think we gave $50 to charity last year. A. yesB. no The Mexican federal Constitution of 1824 granted- For what reason did a group of colonists agree to this compact?A. To declare independence from all European nationsB. To form a social contract among themselvesC. To demonstrate goodwill toward local American IndiansD. To establish trade relations with other colonies cv xfbdgdzcv vcbgftjsyumyhnbgvfcdxsssssgfd Angad was thinking of a number. Angad doubles it and gets an answer of 46.8.What was the original number? Which of the following is true about nuclear fusion?t is easy to implement.It produces less energy than nuclear fission.It produces more energy than nuclear fission.It has the ability to occur easily in everyday life. What is the second thing that Madison argued tirelessly for? How did economic concerns contribute to the creation of the Monroe Doctrine? A. Wars in Europe caused the United States to lose access to necessary goods, so it negotiated regional free-trade deals in Latin America. B. The United States promised to protect Latin America from European interference in part to improve trade with Latin American countries. C. The United States promised to protect European interests in Latin America in part to improve trade relationships with European countries. D. Wars in Latin America caused the United States to lose access to necessary goods, so it developed a policy of founding colonies in the region. The density of ice is: less than that of water equal than that of water greater than that of water Jump starting a car requires _____. A. jumper cables and a jack B. a power source and a jack C. jumper cables and a wrench D. jumper cables and a power source Select the compound inequality that does not belong with the other three.a>4 or a 8a>7 or a 9 the sum of the second and fourth of four consecutive integers is 110 Evaluate 4 M-n if m= -7 and n = 2. 9. Yo no_______el arquero del equipo de Barcelona, yo______el delantero.10._____un nombre que empieza por "t".11. Esto que _____12. Ustedes de dnde ________13. Vosotros de dnde ______14. Est _______la ciudad donde nac. Se llama Quito.15. Esos papeles _______fotos de Madrid. A clearing corporation agent or depository for securities transactions A) can never be a corporation. B) must be a broker-dealer. C) can be a commercial bank. D) can be a bank or corporation only if they are also a broker-dealer.