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podryga [215]
2 years ago
11

Please help if you're good at science/ biology.. I NEED A 100!! (7th grade) Explanation plss! (I'll mark brainiest if right!)

Biology
2 answers:
il63 [147K]2 years ago
6 0

Answer:

1. B

2. A

Explanation:

Leno4ka [110]2 years ago
4 0

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.

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1. Why does the moon appear to change throughout each month? *
andrey2020 [161]

Answer:

C

Explanation:

As the Earth moves in relative to the moon the Earth blocks part of the sun from the moon causing only parts of the moon to light up. This BEST answers the question because B is not accurate because it doesn't describe why we actually SEE it. A might be true but it is not the BEST explained.

Hope this helps! (^-^)

6 0
2 years ago
During an experiment to determine if people with more symmetrical body features have a lower incidence of disease, a researcher
joja [24]

Answer:

e

Explanation:

<em>The main reason such an elaborate device was used would be to eliminate any element of bias by the researcher.</em>

It is important to eliminate biases when taking measurements so as to ensure the accuracy of the data and the overall outcome of the experiment. <u>If a simpler device had been used in which the researcher manually records the length of the bones, it is possible to knowingly or unknowingly introduce biases or random error into the experiment which will impact the integrity of the data and the outcome of the experiment.</u>

The correct option is e.

4 0
2 years ago
Explain why it is important to know whether a resource that you are using is renewable or nonrenewable.
mihalych1998 [28]

Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. This is usually due to the long time it takes for them to be replenished. Renewable resources are replenished naturally and over relatively short periods of time. Therefore, it is important due to the drastic difference between them because the ability to replenish is very important than that of it not being replenish-able.

-Hope this helps, best of luck

6 0
3 years ago
Look at the diagram of the male reproductive system. Name the parts
Delvig [45]

Answer:

Explanation:

مرحبًا ، أود أن أحاول مساعدتك في عملك المدرسي. إذا كنت تستطيع أن تشرح أكثر فأنا أقدر ذلك.

4 0
2 years ago
What is Thigmotropism?
PIT_PIT [208]
Thigmotropism is a movement in which a plant moves or grows in response to touch or contact stimuli. The prefix thigmo- comes from the Greek for "touch". Usually thigmotropism occurs when plants grow around a surface, such as a wall, pot, or trellis touching 1 another.
5 0
3 years ago
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