Select four problems of which tractor drivers need to be aware. muscle cramps
U hearing loss
. wheezing
um rollovers
crashes
amputation
I hallucinations
O injuring bystanders

life would be meaningless without memes

1. desertification

2. captive breeding

3. black rhinoceros

4. renewable resources

explanation:

mark brainliest!

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

the must be sensory neurons.  

hope its .

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;