Answer is Middle Paleozoic era.
Paleozoic era was in 542 Ma - 245 Ma and it has 6 periods as Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian.
360-280 Ma - forming of vascular plants with woody tissues, seeds and veins.
430 - 410 Ma - forming of jawed fishes and first amphibians.
420 Ma - forming of scorpions
360 Ma - forming of crustaceans.
C The dark green phenotype benefits the insects' survival, making them more likely to reproduce.
Answer:
C is not true, biotic compounds do in fact need abiotic factors.
The answer is A. Speciation is the process by which new species are formed. It is an evolutionary process where certain biological populations evolve to new distinct species. It was the biologist Orator F. Cook who first coined this term. <span>There are types of speciation </span><span>namely</span><span> sympatric, parapatric, peripatric and allopatric.</span>