They start at the dendrite is the correct answer...
They cannot travel backwards
And they are found in both the autonomic AND the somatic nervous system
I'll answer number 3 for you.
Which are decomposers within a spruce-fir forest ecosystem?
the answer is mushrooms.
Some mushrooms are known for growing over dead things..... I think.
your answer is A because a geometric progression is increased by a factor of 3, therefore 4x3=12 and 12x3=36.
hope this helps!!