Three reasons a species could become extinct include, deforestation, being overhunted, not enough food available.
Rather, each myelin sheath insulates the axon over a single long section and, in general, each axon comprises multiple long myelinated sections separated from each other by short myelin sheath-gaps called nodes of Ranvier. ... In the CNS, axons carry electrical signals from one nerve cell body to another.
Baryonic dark matter may occur in non-luminous gas or in Massive Astrophysical Compact Halo Objects, and stars. So therefore it’s D.
Answer:
The answer is D. Animals and plants
Answer:the result is evolution
Explanation: example it can be traced in Mesozoic era by modifications and removing of certain type of reptiles ie dinosaur
