Which of the following changes in deciduous forests occurs in the spring? A. Trees regain their leaves.
b. Trees block the flow of water and nutrients to their leaves.
C. The leaves of trees begin to lose their chlorophyll.
d. Trees live off of stored nutrients.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

yes, because even though a theory has a  lot of evidence to support it, it is not always true