The answer is A, exercising
Answer:
Why control group is important for scientific study?
In a scientific experiment, the control is the group that serves as the standard of comparison. ... The control group is exposed to the same conditions as the experimental group, except for the variable being tested. All experiments should have a control group.
Explanation:
Answer:
Once the sun's energy reaches earth, it is intercepted first by the atmosphere. A small part of the sun's energy is directly absorbed, particularly by certain gases such as ozone and water vapor. Some of the sun's energy is reflected back to space by clouds and the earth's surface.
Explanation:
latic acids. cause by milk
chittrus acids. cause by lemon juice
