The transmission of an impulse is made possible first by electric signals propagating within a neuron. Then, at the end of the axon called a synapse, chemical substances called neurotransmitters get released to transmit the message. These neurotransmitters then attach to chemical receptors in the following neuron.
Answer:
species richness is the number of species in an ecosystem
New cells come from old cells
Erosion could occur on the dry soil
False the earth doesn't travel through space as a spaceship would the earth orbits around the sun. While a spaceship could just orbit the sun it usually has a destination in where the earth does not.
