Answer:
To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells.
Explanation:
i want to say A...............................................
This is true a theory is an explanation of observable facts and phenomena.
Answer:
Meiosis II begins
Explanation:
After the cells split in two, the genetic material splits again, resulting in half of the chromosomes, as part of the meiosis II process
Answer:
all of them.
Explanation:
biodiversity is good for any ecosystem.
