It would have to be the variable
Answer:
a pair of factors known as genes control traits, one gene comes from each parent for every tree, each trait is passed from generation to generation, when game it's are found genes separate, if there are two unalike jeans one maybe seen while the other is hidden.
Explanation:
A relatively small blood pressure gradient is generally insufficient to move blood through the veins under given conditions, thus venous return must be facilitated by valves within veins and two "pumps." ... As skeletal muscles contract, veins are squeezed to help propel the blood toward the heart.
It's answer is 3 a squirrel gathering acorns from a oak tree.
