Howard has a chemical burn from accidentally spilling a strong basic cleaning solution onto his arm. It causes a small burn mark that goes away
after a few weeks. He has no other symptoms. What kind of exposure is this
considered?

relationship between pressure and air volume and led to the understanding of how respiration works; i believe this is the correct answer ; /// good luck

hmmm

true, i think.

i checked and it seems the answer is, true.

she forgets to repeat her message as often as necessary

frequency is the answer