Answer: It is important to control the variables so the evidence from the experiment are as accurate as possible.
Answer:
First question - Green curve
Second question - Red curve
Explanation:
<span>which some organisms have learned to harness energy from sources other than the sun, including geothermal energy. That heat energy allows them to form energetic molecules of their own.</span>
Hydroelectricity comes from using the kinetic energy stored in the water. When the high pressure through the blades are released, its kinetic energy is transferred onto turbine blades to generate electricity.
C. the penis produces millions of sperms at a time.
