The largest mass extinction event in the history of the earth occurred at the end of the period.
a. cambrian
b. ordovician
c. permian
d. devonian

Azygote becomes a mature adult through the process of: meiosis or mitosis

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid? o a. unsaturated fatty acids have more hydrogen atoms. o b. unsaturated fatty acids have double carbon bonds. o c. unsaturated fatty acids have more nitrogen atoms. o d. unsaturated fatty acids have single carbon bonds.

Plz ! ive been stuck on this forever