Answer:
They don't reproduce independantly but have to invade other cells.
Explanation:
The answer is B I'm pretty sure of it.
Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms.
Answer:
Explanation:
This is because the sieve plate interconnected like that help in exchange of substances or transport of substances between element cell and it act as a barrier to prevent the sap from been loss when phloem is damaged or cut. The sieve plates form the sieve tube which is the conducting element of the phloem. It is formed from series of elongated cells that are interconnected by perforations in their walls.
Thermal energy/ heat energy
