The scientific community was slow to accept the asteroid impact hypothesis. Why? A. Most global extinctions were thought to occur as a result of supernovas.
B. Foraminifera appear on both sides of the K-T boundary.
C. Dinosaur fossil evidence contradicted the asteroid hypothesis.
D. At the time, most geologists thought that Earth's systems changed gradually and not rapidly from major catastrophic events.

D.At the time, most geologists thought that Earth's systems changed gradually and not rapidly from major catastrophic events.

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

hope this have a good day

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.