Please help and thank you!
This is more Environmental science than biology.

1. B

2. C

3. E

4. A

5. D

Explanation:

1.  The dependent variable is that part of an experiment that is measured when collecting data.

2. Observation involves taking notice of things with your senses.

3. The control of an experiment is the variable that is normal or remained unchanged.

4. A hypothesis is a testable prediction.

5. The independent variable is the variable that is changed.