How do fraternal twins form? A. one egg from each ovary B. a zygote splits into two zygotes C. two sperm reach an egg at the same time D. eggs are fertilized in different menstural cycles

Which group of molecules are targeted by the kinases in order to control this movement

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance

Kudzu vines grow by climbing and wrapping around trees. trees covered by kudzu can die because they are starved of sunlight. what type of relationship exists between the trees and the kudzu growing on them?