23 points neuron sends signals in the brain and body via: neurotransmitter only electrical impulses only neurotransmitter and electrical signals

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?