Answer:
When neurotransmitter molecules bind to receptors located on a neuron's dendrites, ion channels open. At excitatory synapses, this opening allows positive ions to enter the neuron and results in depolarization of the membrane—a decrease in the difference in voltage between the inside and outside of the neuron
Explanation:
Answer:
population density is the answer of the question
A. The pollen or seeds gets stuck to the animals feathers or fur, spreading the plants area.
The first one is d, the second is c.
