Phases of meiosis/ ANSWER PLEASE

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain