Please help if you're good at science/ biology.. I NEED A 100!! (7th grade) Explanation plss! (I'll mark brainiest if right!)
Answers
Answer:
3. The valves, 7. Aorta
Explanation:
The previous answer you were given is incorrect. The alveoli are not arteries nor do they carry blood anywhere. They're air sacs within the lungs.
Related Questions
many species of animals carry an allele for albinism (lack of pigmentation). Albinos are usually pale or white in color. explain why the allele for albinism is present at la lower frequency than the allele for having pigments. what conditions would be necessary for the albino allele to be more frequent?
Answers
Answer: breeding an albino with an albino and let the babies lose and repeat
Explanation:
The allele for albinism is present at a lower frequency because it is not adaptive for most of the environments where humans live.
What is an allele?An allele is a gene variant that confers a certain fitness to an individual depending on the environment where this organism lives.
Adaptive alleles are in high frequency because they confer an adaptive advantage.Non-adaptive alleles are present in low frequency because they do not confer an advantage.In conclusion, the allele for albinism is present at a lower frequency because it is not adaptive.
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Is global warming in a tundra biome secondary or primary succession? Why? PLEASE ANSWER
Answers
1. The location of two hikers is marked on the topographic map to the right as points F and H. What is the elevation of the camper at point F?
2. Each hiker climbed to point G along the path indicated by the arrow. What was the change in elevation for the hiker that took the steepest path to point G?
3.The Vs just below the path of F up to G indicates what landform?
4. What is the purpose of this series of satellite images?
A. To show the path of three different rivers
B. The direction the water flows in the river
C. The changes in the path of the river
5. Weathering (breaking off sediments upriver), erosion (moving the sediments down river) and finally deposition caused the changes in the river.
What helps hold sediments in place to prevent erosion?
Answers
Drag each tile to the correct box. Place the items in order from highest to lowest degree of internal organization.
tissue
organ system
organ
cell
↓
↓
↓
Answers
Mark if correct! Give crown please!
Which organisms are tertiary consumers? Check all that apply.
penguin
cod
elephant seal
killer whale
krill
squid
leopard seal
zooplankton
No links
answer if you want to talk about random stuff, who want to be my friends?
Answers
Answer:
killer whales, penguins, leopard seals, and elephant seals
Answer:
Tertiary consumers: killer whales, penguins, leopard seals, and elephant seals
Explanation:
EXPLAIN THE ANSWER AND I WILL GIVE BRAINLIEST:
Answers
Answer:
a
Explanation:
it helps them photosynthesize
Answer:
A
Explanation:
Plants rely on energy from sun rays to feed itself. Plant's leaves spread out and collect energy from the sun for the plant (A plant's leaves and roots are kind of like it's mouth, leaves for sun rays ; roots for water) So, to maximize the amount of energy the plant receives, the plant bends the leaves towards the sun.
P.S.: It's ok if you think I'm wrong.
Which type of weathering do you think is more rapid in your area? Justify your answer. PLEASE HELP MY MOM IS MAAAAD AND IM DOING OVERDUE WORK JUST PUT WHATEVER PLEEEEEAAAAASSSSSEEEE
Answers
Answer:
chemical weathering
In warmer climates, chemical weathering is more rapid because the chemical reactions that dissolve rocks and minerals are accelerated by warm temperatures.
Answer:
physical weathering
Explanation:
I live in a very cold environments and physical weathering is most rapid in cold places
EXPLAIN THE ANSWER AND I WILL GIVE BRAINLIEST:
Answers
Zoe takes a boat out of Miami (25° North latitude). Using what you know about the global winds, which direction is she most likely to sail?
A. from west to east
B. from east to west
C. from north to south
D. in a circular pattern
Answers
Answer:
d
Explanation:
1. Describe the flow
of energy in a
marine food web.
Include at least 5
organisms.
2. Describe how
removing an
organism from a
food web can
impact the entire
ecosystem.
Answers
Answer:
1. A food chain is a single pathway connecting a producer with several levels of consumers. In a typical marine food chain, dinoflagellates convert energy from sunlight into food through photosynthesis and store it in their tissues.
2. They would starve and die unless they could move to another habitat. All the other animals in the food web would die too, because their food supplies would have gone. The populations of the consumers would fall as the population of the producer fell.
have a good day!
The flow of energy in a marine food web include the following:
Plankton⇒shrimp⇒ salmon⇒ seals⇒ whales
What is a food web?A food web comprises of food chains which are interconnected and also
explains the flow of energy between organisms in the ecosystem.
In the marine ecosystem, the plankton which are plants are the primary
producers while the whales are the tertiary/quaternary consumers as they
are at the top of the web.
Removing an organism from a food web can impact the entire ecosystem
by reducing the number of organisms and options available for food. It can
increase or decrease the population of organisms which they have direct
relationship with.
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what is the structure identified by the arrow in the diagram below?
A. Chromosome
B. DNA Strand
C. Gene
D. Cell
Answers
Answer:
A.}Chromosome
Explanation:
According to the research, a chromosome is the structure identified by the arrow in the diagram below.
What is a chromosome?It is a condensed structure of DNA (deoxyribonucleic acid) present in cells that contains genetic information.
In this way, they have a double structure, composed of two structures parallel to each other and joined by a centromere, called chromatids, in each of the "arms" of a chromatid the genes are located.
Therefore, we can conclude that according to the research, a chromosome is the structure identified by the arrow in the diagram below.
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Which is a question which science cannot answer?
How does the moon affect tides on earth?
When will the next earthquake happen?
Why do volcanoes erupt?
How long does it take for the earth to rotate on its axis?
Answers
Answer:
When the next earthquake will happen
Explanation:
science cannot predict exactly when something like that will happen.
Severe weather can occur anywhere, but not every area experiences the same severe weather. Hurricanes are a type of severe weather that only occurs in certain places. In the space below, explain why hurricanes form in tropical latitudes and not in other places.
Answers
Explanation:
The reason that hurricanes form around the tropics and not at the equator is that there needs to be Coriolis effect. Coriolis effect is what cause the winds to deflect to the right in the Northern Hemisphere and the left in the Southern Hemisphere.
socratic dot org
What two Units do Astronomers use to calculate Distance to Stars
Answers
Answer:
astronomical unit (AU) and light years
Explanation:
Why do organisms with one color produce few offspring than those with multiple colors?
Answers
Answer:
The answer is literally nature selection.
Explanation:
It just depends on it.
Help me please thank you!
Answers
Answer:NONLIVING:When frogs hop on rocks,and when frogs swim in the water.
LIVING:When they eat flys,and when they interact with another frog.
Explanation:
Answer:
a non living could be the water itself, it would use it as an escape method from predators. It could use grass as covor from predators as well.
Explanation:
Edge notes
I took notes on the climate section so hope it helps
Answers
Which of these is the deepest part of the ocean floor? (2 points)
guyot
seamount
abyssal plain
ocean trench
Answers
Answer:
Its D
Explanation:
Explain why a food web is a more realistic model of energy flow than a food chain.
No links or jibberish!
Answers
Answer:Las redes tróficas consisten de varias cadenas alimentarias interconectadas y son una representación más realista de las relaciones de consumo en los ecosistemas. La transferencia de energía entre niveles tróficos es ineficiente, con una eficiencia típica de alrededor del 10%.
Explanation:
Answer:
Food chains only show one path by which energy can move through an ecosystem. Because most organisms eat a variety of things, they are part of many food chains. A food web shows the interconnected food chains in an ecosystem and the multiple paths through which energy can move, which is why it is a more realistic model for showing energy flow.
Explanation:
this is the SAMPLE RESPONSE
hope it helps :)
Help please? Im stuck.
Just say A, B, C, or D. Thanks!
Answers
45 POINTS FOR A CORRECT ANSWER!!!! No links though, those are super sus and I don't like those. If you do something sus I will report you. :) But please help me! I'm super confused and a thorough explanation would really help! Thanks to anyone who answers in advance!
A specific type of bacteria reproduces through binary fission every two hours. If there are seven bacteria to begin with, how many bacteria will there be after four hours?
Answers
Answer:
28
Explanation:
This is because every 2 hr 4 bacteria "are made" so 7 bacteria 2 hrs later
7x4=28
Please help me with this
Answers
Answer:
3.The plants get their energy from the sun.
4.Most of the arrows are facing the eagle.
5.The rabbits and snakes would overpopulate.
Explanation:
Michelle and Juan are working on a science project. They take a large glass jar, fill it with some damp paper towels, and then with seeds. They place this jar near a window. After a few days, they see that the seeds germinate and produce stems growing upward. Next, they moisten the towels again and lay down the jar on its side. What are they most likely to observe about the stems after turning the jar on its side?
A: Grow sideways in their new position
B: Start growing downward in their new position
C: Stop growing more than they have already grown
D: Start growing upward in their new position
Answers
1. The location of two hikers is marked on the topographic map to the right as points F and H. What is the elevation of the camper at point F?
2. Each hiker climbed to point G along the path indicated by the arrow. What was the change in elevation for the hiker that took the steepest path to point G?
3.The Vs just below the path of F up to G indicates what landform?
4. What is the purpose of this series of satellite images?
A. To show the path of three different rivers
B. The direction the water flows in the river
C. The changes in the path of the river
5. Weathering (breaking off sediments upriver), erosion (moving the sediments down river) and finally deposition caused the changes in the river.
What helps hold sediments in place to prevent erosion?
Answers
Answer:
1. 740 2. elevation above sea level. Contour lines run next to each other.
3. canon valleys mountain 4. a number 5. just search it up it easy
Explanation:
Why do organisms with one color produce few offspring than those with multiple colors?
Answers
Answer:
atural selection can cause microevolution (change in allele frequencies), with fitness-increasing alleles becoming more common in the population.
Fitness is a measure of reproductive success (how many offspring an organism leaves in the next generation, relative to others in the group).
Natural selection can act on traits determined by alternative alleles of a single gene, or on polygenic traits (traits determined by many genes).
Natural selection on traits determined by multiple genes may take the form of stabilizing selection, directional selection, or disruptive selection.
Explanation:
The Nervous System is one of the first systems to develop during the embryonic period. Why do you think this is?
Answers
The process of neurulation, which takes place between weeks three following conception, allows the embryo to form the components that will one day become the nervous system. It's important to regulate body functions.
What is embryonic nervous system?The neural crest gives rise to the development of structures in the periphery. At this stage, the early nervous system resembles nothing more than a straightforward tube. It begins from the front of the embryo and continues all the way around to the back. Beginning at day 25, the anterior end will develop into the brain, while the posterior portion will develop into the spinal cord.
The brain is the organ that is responsible for controlling every function of the body. The brain is connected to the rest of the body through the spinal cord, which travels down the back. It contains nerves that are similar to threads and branch out to every organ and area of the body. Messages are transmitted to and from the brain via this network of nerves, which connects the brain to various regions of the body.
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The test: To understand if the ACTN3 protein affects running ability, researchers conducted a test. They recruited a group of competitive runners and measured the level of ACTN3 protein molecules each runner had in their bodies. Then, they had the runners participate in a sprint (a short-distance run). During the test, the runners sprinted as fast as they could for 100 meters.
Evidence: Scientists found that the runners who sprinted the fastest had the highest amount of ACTN3 protein molecules in their bodies.
Do you think that this evidence shows that the ACTN3 protein determines running ability? Explain your ideas using the words protein, trait, and feature in your response.
Answers
Answer:
The ACTN3 gene encodes the alpha-actinin-3 protein which is present in fast-twitch muscle fibers. ... Although having one or two variant forms of the ACTN3 gene does not have any harmful effect, an individual's ACTN3 genotype does affect their athletic ability.
hope that helped
Explanation:
Answer:
The ACTN3 gene encodes the alpha-actinin-3 protein which is present in fast-twitch muscle fibers. ... Although having one or two variant forms of the ACTN3 gene does not have any harmful effect, an individual's ACTN3 genotype does affect their athletic ability.
True or False: Limiting factors can help within an ecosystem by preventing populations from becoming too large.
Answers
Answer:
TRUE
Explanation:
Answer:
True.
Explanation:
( I hope this helps you. )
What is the origin of the energy that all organisms need to carry out life functions?
A. food
B. producers
C. plants
D. the Sun
Answers
Answer:
D. The Sun
Explanation:
The Sun is the major source of energy for organisms and the ecosystems of which they are a part. This process begins the flow of energy through almost all food webs. Food is sunshine stored in chemical form. Organisms use the stored energy in food to fuel all living processes.
Which of the following stages of complete metamorphosis involves a period of continuous
eating?
A. pupa
B. adult
C. egg
D. larva
Answers
Answer: I think it's A
Explanation: Butterflies, moths, beetles, flies and bees have complete metamorphosis. The young (called a larva instead of a nymph) is very different from the adults. It also usually eats different types of food. There are four stages in the metamorphosis of butterflies and moths: egg, larva, pupa, and adult.
Hope this helps :D
Answer:
A.) The pupa
Explanation: