What is an atom?
a. the smallest unit of matter.
b. the largest unit of matter.
c. a particle that has a negative charge.
d. a participle that has a positive charge.

In which process is oxygen absorbed by an organism asap apex

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature above 37 degrees celsius (98.6 degrees f)? describe what might happen if the temperature decreased by 10 degrees celsius.

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.