According to Darwin,
in species could result from many
over long periods of time.
B. big changes; small changes ✅

Methane is the cause of global warming
Answer:
Aa
Explanation:
from what I can remember from 7th grade science
Carbonate groups contain a single carbon atom, and three oxygen atoms in a trigonal molecular geometry. The carbon atom has two single bonds to two oxygen atoms and a double bond to the third oxygen atom. Therefore, in addition to carbon, carbonate minerals contain oxygen. An example of a carbonate mineral is calcium carbonate, often found within rocks.