Answer:
because they can donate blood to anyone
Explanation:
Answer:
The answer is actually B) Memory T. Memory T cells rapidly produce large numbers of effector T-cells when re-exposed to their antigens, which provides the immune system memory against past infections.
A. osmosis because no energy is needed to carry it out
Answer:
How can examining specimens under a microscope help scientists classify an organism? It can help scientists classify an organism because they can see it super close up. In plant cells, how are chloroplasts and mitochondria related?
Explanation:
A. Potential energy to Kinetic energy.
It becomes Kinetic energy by rolling down the hill thanks to gravity and friction.
