Answer:
400
Explanation:
Because if you pull one black marble out of four and there are 100 black marbles then there is 300 others, so in total it would be 400 marbles.
thanks if i'm given brainliest!!!
Answer:
B
Explanation:
I've had this question before got it right.
I think maybe the nephrons ...but not sure...
Answer:
c
Explanation:because i know
Answer:
Impulses travel from one neuron to the next by an electrical impulses that travels down the axon of one neuron to another. So I believe its 1.
Explanation:
Have a good day! (^w^)