In addition to being necessary for respiration, also provides uv radiation protection.

a. water
(b.) carbon dioxide
c. oxygen
d. hydrogen

carbon dioxide?

When does dna replication(make a copy of itself)?

What enzyme is most important for dna replication and why?

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials