Only the strongest animals survive
It's an sight observation you're using your eyes to see it it's one of your 5th sences
Answer:
intracellular is the correct answer
They are descended from wild plants.
The Punctuated Equilibrium theory proposes that a specie that appears in the fossil record will become stable. To support this theory, a fossil record serves as an evidence which includes transitional fossils. Transitional fossils refers to the remains of an organism that still exhibit traits to both the ancestral and descendant group.