The answer is A, 'a mammal' because it goes with the copulative verb 'to be', i. e., 'is'.
It's C! It changes as new evidence is found.
It occurs in the first phase known as the Prophase. During this the chromosomes inside the cell’s nucleus condense to form tight structures.
When scientists read research articles in scientific journals, they apply skepticism in order to evaluate experimental procedures.
The scientists apply skepticism and evaluate experimental procedures to gain more knowledge on what things the researches are going on. In this way, a better conclusion can be made.
