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irinina [24]
3 years ago
13

18. Refraction is caused by

Biology
1 answer:
Sauron [17]3 years ago
8 0

Explanation:

Option D is the correct option.

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2. Humans, just like all other living organisms, have evolved over time. Explain how scientists
natta225 [31]

Answer:

A. fossils of archaic humans show we have evolved through the differences in bone structure. Humans used to look a lot like chimps, and through fossils we can see differences in our skull shape and size, differences in the amount of body hair we had, and through vestigial bones like wisdom teeth, which we do not need anymore today. Wisdom teeth were likely used to chew raw meat, which we do not do anymore.

C. Chimpanzees are our closest living relatives on the planet, with 99% of our DNA being the same.

Explanation:

Sorry the first one is lengthy, I don't know how long it should be but I hope that helped

5 0
3 years ago
Explain the structure of a mosquito briefly.​
valina [46]

Answer:

Mosquitoes have thin, long bodies and three pairs of extremely long legs. They have scales along the veins of their wings and long beak-like, sharp sucking mouth parts called a proboscis. These two features distinguish mosquitoes from other flies. Mosquitoes also have feathery or hairy antennae.

8 0
3 years ago
Read 2 more answers
What kind of rock is shown in the picture ? <br> How do you know what type of rock it is ?
maksim [4K]

Answer:

Sedimentary

Because it is made is sediments

Explanation:

got it right , edge 2020

6 0
2 years ago
Read 2 more answers
Microbiologist who demonstrate that DNA was genetic material is...
LenaWriter [7]
Check in your text book
5 0
2 years ago
A scientist claims that he has protected animal test subjects from a newly mutated virus using an experimental vaccine. The expe
Oliga [24]

Answer:

A. They were part of the control group

Explanation:

In a scientific experiment, the CONTROL GROUP as opposed to the experimental group is the group that does not receive the experimental treatment. This acts as a standard for comparison.

In this question, the EXPERIMENTAL VACCINE is the experimental treatment or independent variable that was added. The five animal test subjects that was injected with this vaccine are called the EXPERIMENTAL GROUP while the other five test subjects that were rather injected with a PLACEBO are called CONTROL GROUPS.

5 0
3 years ago
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