Subjects in experimental and control groups should be as different as possible,
OA. True
OB. False

The above statement is true.

Explanation:

An experimental group can be described as the group in which changes are made so that the result of these changes can be studied.

A control group can be described as a group in which no changes are made and the changes in the experimental group are measured according to comparing it with the control group.

The subjects in the control group as well as the experimental group shall be different so that the changes can easily be compared.

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.