There are many steps in designing and conducting a scientific experiment, but the main ones are a hypothesis, trials, step/procedures, and a conclusion/review
I believe all living things can be found in the Biosphere.
The answer is (C.) The rotation of Earth
<h3><u>Answer;</u></h3>
A. Gas exchanges takes place by diffusion.
B. It is an open system.
<h3><u>Explanation</u>;</h3>
- Most molluscs and arthropods have an open type of circulatory system.
- Open circulatory systems pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells.
- Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood.
