Since people with HIV have weakened immune systems it would be:
C) People with HIV are unable to fight off these rare diseases.
They are not from the periodic elements scientifically.
It is the b. food chain and begins with plant, then animals that eat plants, and finally animals that eat other animals.
Answer:i think At a chemical synapse, one neuron releases neurotransmitter molecules into a small space (the synaptic cleft) that is adjacent to another neuron. The neurotransmitters are contained within small sacs called synaptic vesicles, and are released into the synaptic cleft by exocytosis.
Explanation: i hope this answer your question....
