Answer:
D) The continents' shapes fit together well, and some continents have the same fossils.
Explanation:
Study Island
The continents' shapes fit together well, and some continents have the same fossils. Therefore, option D is correct.
What is Pangea's theory?Pangaea Wegener was of the opinion that the planet's continents were once a single, massive landmass known as Pangaea. Wegener, an astronomer by training, described Pangaea and continental drift using biology, botany, and geology.
Pangea is significant because it formerly linked all the continents, enabling animal migration between continents that is currently impractical. As a result, various species and distinct climates evolved.
Later it was discovered that the rock formations of western Europe, northern Africa, and eastern North America all shared a similar ancestor and that they coevolved with the existence of Gondwanaland. The continent's shapes fit together well, and some continents have the same fossils. Together, these findings provided evidence for Pangea's existence. Hence, option D is correct.
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Is energy and matter created or conserved
Answer:
created
Explanation:
you make engery by eating food
matter is made by making someing
Answer: Conserved
Explanation:
You cannot create nor destroy matter nor energy
Scientists conduct scientific investigations for which of the following reasons?
I. to discover new things about the natural world
II. to explain observed phenomena
III. to test the conclusions found in previous research
IV. to test the predictions of current theories
A. I and II only
B. III and IV only
C. I, II, III, and IV
D. III only
Answer:
C is the answer so it's correct
Read the information below and decide if the information provided will classify this item as a cell.
Has a cell membrane and nucleus.
Is moving around under the microscope lens.
After four hours of time, this cell divided into smaller, identical cells.
Select one:
True
False
Answer:
True
Explanation:
It sharea all of the characteristics of a cell, including the ability to divide and make more copies of itself.
Help! are Dietes grandiflora vascular plants?
Answer: Yes
Explanation: All flowering plants are vascular
Why is it necessary to convert carbohydrates into sugars? So they can be absorbed by the body Because sugars taste better than carbohydrates The body cannot get sugars from other sources Chemical energy is only found in sugars
Answer:
So that they can be absorbed by the body.
Explanation:
Carbohydrates are complex and sugars are simple form of carbohydrates. Since carbohydrates is complex and not easily absorbed it is converted to sugars which the body can absorbed easily during digestion and it is converted to energy to drive the cells. Examples of sugars are sucrose,glucose.
Select one of the organisms to go 'extinct' or become 'endangered' from the food web shown in the diagram. Tell how the change or loss of the organism will likely affect other organisms and the environment of the ecosystem.
Please help
Answer and Explanation:
The trophic web is the process of energy transference through a series of organisms, in which every organism feeds on the preceding one and becomes the food for the next one. The first link is an autotroph organism or producer, such as a vegetable, that can synthesize organic matter from inorganic matter. The next links are the consumers: herbivores are primary consumers and feed on producers. Carnivores are secondary consumers and feed on herbivores, and so on. The last links are the decomposers, microorganisms that act on dead animals degrading organic matter.
When one of the links disappears, it affects the superior links as they will not have their food source. The immediately anterior link will be beneficiated, as it will not be eaten by its predator. And finally, as this last link will overgrow, it will consume greater quantities of its food, causing a decrease in its anterior link.
In the exposed example, if salmon gets extinct, the krill population will increase because they won´t be eaten by salmon. As the krill population goes up, phytoplankton will decrease, because more krill will be eating these organisms.
As salmon disappears, the cephalopod population will be affected, because salmon was one of its food sources. As cephalopods are also eaten by the puffins, these last animals will also be affected. The decrease in puffins population means that the rats' population will decrease too, as rats feed on the puffin´s eggs of puffins. Finally, foxes will be affected too, because rat´s population went down.
This is only one path affected by the extinction of the salmon. But all the animals in the trophic chain will be affected.
Answer:
Phytoplanktons.
Explanation:
This is the primary producers in this ecosystem.Its extinction will affect photosynthesis, and therefore oxygen and carbon availability for the survival of other organisms in the ecosystem.
Besides this, it is the primary producers for zooplanktons, sandlance, and krills of the food web.Therefore, its extinction affects the survival and the population of these consumers.
Consequently, Salmon, puffin, and Cepahlopods which depended on the above three primary consumers fizzled out of the foodweb.
Eventually,rats,kitiwake,,gull auklet population disappear with consequent reduction in the numbers of Fox.
Hybrid instruments that play sounds that are part sampled and part synthesized are known as:
Scientists have incorporated a barley gene into a type of rice and produced rice plants that have much lower methane emissions. It is most likely that the scientists incorporated the barley gene into the rice, producing a new variety, using the process of ___________.
Answer:
The correct answer is "genetic engineering".
Explanation:
The missing options of this question are:
(1) selective breeding
(2) meiosis, followed by recombination
(3) genetic engineering
(4) sexual reproduction, followed by mitosis
The correct answer is option (3) "genetic engineering".
Genetic engineering is a modern technology that uses a DNA recombinant approach to alter the genetic material of an organism. In this case the genetic material of rice was modified by incorporating a new gene that is originated from barley. The transference of a gene from an organism to another is most easily achieved by genetic engineering technology.
What happens during prophase?
A- A new Nucleus forms around each copy of DNA
B-The chromatids are pulled apart
C-The Mitotic spindle forms
D-Spindle fibers attach to the chromatids
Answer:
During the prophase, Chromatin will form into chromosomes, and spindle fibers emerge from the centrosomes. The answer is C ^_^
Answer: C-The Mitotic spindle forms
Explanation:
I did this on a pex and got it correct :)
Which describes the role of oxygen in photosynthesis?
Answer:
Oxygen is a by-product during the photolysis of H2O to release electrons to be energised and passed down the electron transport chain and H+ ions.
2
tivity
Atmospheric
Water (H.O gas)
2 of 6
Water from
oceans and
lakes
evaporates
and then
condenses to
form clouds
Groundwater
is taken up by
plant roots and
then, through
transpiration,
released to the
atmosphere
Waterfalls to
the surface as
precipitation
Surface runoff
leads through
rivers to lakes
and oceans
Some water
Seeps into the
ground and
becomes
groundwater
Ocean
Groundwater
Bological
- Physical Chemical
What is being cycled?
Answer:
groundwater is being cycled
Why aren’t descriptive investigations relatable
Explanation:
Descriptive investigations are not repeatable because they are based only on observations made at a single point in time. The results may vary at a different time. In addition, descriptive investigations do not contain variables that may indicate cause-and-effect relationships.Aug 20, 2019
there were a few kinds of birds that lived in the farm area. Predict what would occur if many kinds of birds bred in the birdhouse
Answer:
Explanation:
Birdhouses are a fantastic way to add shelter to a bird-friendly backyard, but if no birds are nesting in the houses, then how do you make them come? There can be a wide range of difficulties with birdhouses, but there are also easy ways to fix each problem to make the houses more attractive to nesting birds. If birds aren’t using your houses, check these common problems and solutions to be a better bird landlord.
01
of 10
No Birds Even Look at My Birdhouses
Killdeer Nest
Oregon Department of Fish & Wildlife / Flickr / CC by-SA 2.0
It may be that there are no cavity-nesting birds in your yard. Only certain species of birds will use houses, and if you know which birds those are, you can add feeders, water features, and shelter to make the yard more attractive to those species. As they get more comfortable with your yard, they will start to check out the available nesting sites, including birdhouses.
02
of 10
Birds Build Nests Before My Birdhouses Are Ready
Spring Flowers in Snow
If you’re waiting until spring flowers bloom to put up birdhouses, it may be too late to attract the first nesters. Early-nesting birds, however, may still investigate the house for additional broods later in the season. Putting houses up earlier can help attract the earliest nesting species and ensure the houses are ready for residents. Ideally, have houses ready to go in late winter to be available for every nesting bird.
03
of 10
Birds Ignore the Birdhouse to Nest Elsewhere
Unique Birdhouses
Some bird species can be very particular about their preferred houses, including floor dimensions, house shape, and other details. Finding birdhouses that are specially designed for the species you want nesting nearby is the best option for meeting their needs with an appropriate house. Be sure you use houses of the right dimensions and with the proper entrance hole size to suit the birds in your yard.
04
of 10
Birds Build Nests Lower Than My Birdhouse's Height
Tree Canopy
Where you mount a birdhouse is just as critical as the size and shape of the house itself. Some birds will use higher houses, while others prefer houses closer to the ground. Birds nest at different heights and have different preferences for whether the house is mounted on a pole or tree, or if it can be hung. Understanding birds’ preferences can help you position birdhouses properly.
05
of 10
Birds Never Reuse Old Nests
Old Bird Nest
Most nesting songbirds will not reuse old nests, though they may reuse a small amount of the nesting material to build a fresh nest. The best option is to clean out birdhouses after every brood has fledged so the house is clean and clear for another pair of nesting birds to use. This also reduces the risk of dangerous contamination from old feces, feather mites, or insect infestations in an old nest.
06
of 10
My Birdhouse Is Threatened by Predators and Invaders
Cat on a Birdhouse
Birds always look for a safe place to raise their nestlings. Adding safety features such as baffles or guards to a birdhouse will help protect brooding birds. Perches should be removed, and the house design should include drainage and ventilation for safety and comfort. Keep cats indoors and take steps to discourage feral cats and other unwelcome birdhouse predators from your yard.
07
of 10
Larger Birds Use My Small-Bird Birdhouse
European Starling
An inappropriate entrance hole can admit larger birds such as house sparrows or European starlings to a birdhouse, crowding out more desirable residents. Larger birds may even kill hatchlings or brooding adults, but a properly sized entrance hole will keep out larger species while admitting other birds. If the hole has gotten bigger over the years, there are easy ways to fix it to keep larger birds from entering.
08
of 10
My Beautifully Painted Birdhouse Isn't Being Used
Paint Brushes
Paint can be toxic to birds, and painting a birdhouse should be done carefully so as not to endanger adults or nestlings. Exterior paint should be camouflaged to help protect the house from predators and other invaders, as well as to help control the interior temperature of the house. Avoid paints with glitter or other quirky accents, and opt for simple, understated designs to appeal to more cautious birds.
Continue to 9 of 10 below.
09
of 10
I Want to Take My Birdhouses Down in Winter but Birds Are Still Using Them
There can be a wide range of difficulties with birdhouses, but there are also easy ways to fix each problem to make the houses more attractive to nesting birds.
What do you mean by nesting birds?Some birds do not make nests at all and instead lay their eggs in a simple scrape in the ground. Other birds construct nests from natural materials, such as grass, leaves, mud, lichen, and fur, or from human-made materials like paper, plastic, and yarn.
Birds don't vigorously tear up mouthfuls of grass, pluck out their own feathers, pull threads out of outdoor rugs, or peel the screens off windows for no good reason.
The time for incubation varies widely from species to species. Roughly speaking, small songbirds take between 10 days and 2 weeks to hatch and the same amount to fledge. Larger birds such as woodpeckers may take 3 weeks to a month to fledge.
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Spider plants can reproduce both sexually and asexual......
Answer:
I feel like B is the correct answer
Explanation:
B is correct
Answer:
the answer is b the cells of the same
In dogs, ... What are the possible Genotypes of the offspring and percentages? pick two
DD
Dd
dd
DDdd
0% 25% 50% 75% 100%
Answer:
Im really confused
Explanation:
Question 18
homozygous : heterozygous :
a)heterozygous : Bb
b)dominant : recessive
c)probability : predicting chances
d)factor: gene
Answer:
c is the right one to meeeee
Answer:
C
Explanation:
c
Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.
Answer:
Explanation:
The descriptions provided in the question can each be placed into its corresponding Stage of Sleep, like so...
Stage 1
- Alpha waves dominate
- Feeling a drifting sensation
Stage 2
- Light sleep
- Sleep spindles occur
- Beginning of decline in respiration and blood pressure
Stage 3
- Typically begins about 20 minutes after stage 1
Stage 4
- Vital signs are at their lowest levels
- Delta waves dominate
Which type of RNA is matched with its correct function? *
2 points
mRNA - makes a copy of the DNA and carries it to the Ribosome
rRNA - carries amino acids to the Ribosome to build a protein
tRNA - links the amino acids together with peptide bonds to create a protein
DNA: Stores energy
Answer:
tRNA -- links the amino acids together with peptide bonds to create a protein
Which of the following accurately describes one way that individual goods differ from public goods
Answer:
People can be excluded from using individual goods if they don’t pay
Explanation:
Good luck :)
A trait can also be called a/an
observable traits are called phenotypes
How would you perform a streak test on a mineral that it's hardness is 8 1/2?
Answer:
you would test it on something harder (i think)
Explanation:
This disease is one of the main causes of death all over the world. It the primary cause of Coronary Artery Disease (CAD). This leads to further complications, like blood pressure and heart attack. Smoking, high fat diet, physical inactivity and stress can cause this disease. Which of these cardiovascular diseases is being described?
Answer:
Hypertension, obesity
Explanation:
A coronary artery disease, CAD, can be described as a disease that affect the arteries that carries blood from the heart to other parts of the body.
In this case, the disease is known to cause the blockage of the artery which is through the deposition of excess fats in the body.
Answer:
c. atherosclerosis
How will the orbitof a planet closer to the Sun be different from the orbit of a planet farther away from the Sun pleaassee helppp i will mark brainlest
Answer:
Any planet closer to the sun will orbit around the Sun quicker because it is closer.
is dna an amino acid
Answer: No
Explanation:
DNA is a molecule that carries genetic materials in all living things. Amino acid on the other hand are the monomers that make up the proteins
Which disease can destroy red blood cells? Which disease infects T cells? Which disease produces a scaly, stinging, and itchy rash on the feet? giving brainliest to first right answer
Answer: 1 hemolytic anemia, 2 severe combined immunodeficiency, and 3 athletes foot
Explanation:
hemolytic is when your blood cells are being destroyed, severe combined immunodeficiency is several diseases together that infect your T-cells and athletes foot is when your feet have been confined in a small sweaty space. it causes a fungus to grow on your foot.
Answer:malaria aids then ath foot
Explanation:
Draw a Punnett Square to show a cross between a chocolate lab that is homozygous dominant for the epistatic gene and a black lab that is heterozygous for the epistatic gene and homozygous for the color gene. Describe the genotype and phenotype of the possible offspring.
Answer: geno 50% 50%
Pheno: 50% chocolate 50% black
Explanation: the punnett square should have 2 capital L's across the top and down the side one capital L and one lower case L. The firs box should be LL the second box should be LL the third box should be Ll and the fourth should be Ll
When a river flows over time, it may leave a deep groove with tall sides called a(n)? Possible answers in photo.
Answer:
Canyon.
Explanation:
Weathering, volcano, mountain, and erosion are not good answers.
Hope this helped :)
How is it that tiny molecules can release energy that makes something happen?
How do wetlands reduce flooding and erosion? (Site 1)
Answer:
by absorbing water and then releasing it slowly.
Explanation:
Answer:
Wetlands function as natural sponges that trap and slowly release surface water, rain, snowmelt, groundwater and flood waters. Trees, root mats and other wetland vegetation also slow the speed of flood waters and distribute them more slowly over the floodplain. This combined water storage and braking action lowers flood heights and reduces erosion.
Why are wetlands referred to as "biological supermarkets"? pt.2 for edn2020
Wetlands within and downstream of urban areas are particularly valuable, counteracting the greatly increased rate and volume of surface- water runoff from pavement and buildings. The holding capacity of wetlands helps control floods and prevents water logging of crops. Preserving and restoring wetlands together with other water retention can often provide the level of flood control otherwise provided by expensive dredge operations and levees. The bottomland hardwood- riparian wetlands along the Mississippi River once stored at least 60 days of floodwater. Now they store only 12 days because most have been filled or drained.
Mention the functions of queen, drone and worker bees.
Answer:
Thousands of worker bees, all sterile females, assume responsibility for feeding, cleaning, nursing, and defending the group. Male drones live to mate with the queen, who is the only fertile female in the colony.
Explanation: