BIOLOGY MIDDLE SCHOOL

List four different types of evidence that support evolution. Name and explain them.

Answers

Answer 1
Answer:

Answer:

the explanation is in the answer...

Explanation:

Anatomy. Species may share similar physical features because the feature was present in a common ancestor (homologous structures).

Molecular biology. DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are.

Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.

Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.

Direct observation. We can directly observe small-scale evolution in organisms with short lifecycles (e.g., pesticide-resistant insects).

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*PLEASE ANSWER A, B AND C* THANK YOU!During an investigation into muscle strength, a group of students planned to compare their bicep muscles. Each student planned to lift a variety of masses, until they found the largest mass that they could lift. The masses were 5, 10, 15, 20 and 25 kg. The students would then plot a graph of their results.
a) Suggest how the students could improve the reliability of the investigation.

b) Suggest how the students could improve the accuracy of the investigation.

c) The teacher told the students that their investigation was too dangerous. Suggest why.

Answers

Answer:

A) They could re-test the largest mass they could lift and see if the results are accurate.

B) They test it everyday and test if it is the average they can lift daily, instead of just one time or a couple times in one day.

C) They might lift to much , because they don't know how much they can lift at once. They might over lift and hurt themselves. There are many more ways they could hurt themselves , but that is one example.

Hope this helps :)
The answer is B because they only wanted results

Which structure in a cell corresponds with the function of the human lungs? A. Nucleus
B. Vacuole
C. Cell membrane
D. Mitochondria
Please explain why, cause I don’t understand this

Answers

The answer is D. Mitochondria

Mitochondria is an organelle in the cell that corresponds to the function of the lungs. It helps the lungs in the biochemical process of respiration and with the energy production.

Scientists discovered fossils in several layers of the Earth you see here. They found fossils of algae, snails, and clams in layer D. Given that information, where do you think they found fossil evidence of simple land plants and amphibians?A. A
B. E
C. F
D. G

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The answer is C. F

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The answer is C sis

HoPeD THiS hELpeD

Explain why convection happens more efficiently in water or air than it does in rock

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A rock is actually an object so there are a lot of molecules that are stuck together and cannot let most of the heat pass through it. While in water and air, the molecules are more free-willing and more spacious so I think that is why convection travels faster and more efficiently in water and air than in rocks.

All atoms and molecules have mass and therefore _____________

Answers

Explanation:

All the atoms and molecules have mass and therefore they occupy volume. Hence, they are considered as matter.

Basically, a substance that has mass and take up space is known as matter.

For example, table, chair, pen, paper, car, wooden box etc are all matter.

A matter can be in solid, liquid or gaseous state.

Hence, we can conclude that all atoms and molecules have mass and therefore occupy space and known as matter.

Four abiotic factors in a prairie system

Answers

Abiotic factors are things in a system that are not alive.
There are usually general abiotic factors such as:
Air, Water, Rocks, and Dirt (Dirt can be considered biotic and abiotic, most teachers will take it as an abiotic factor).
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