I believe the answer is plant cells
Should be A. Species have changed over time.
Parenteral route
injecting a drug into the body, includes intradermal, SQ, IM, IV routes. Drugs given IV route produce the most rapid actions because they are given directly into the bloodstream.
B. CO2 levels in the atmosphere could increase and contribute to global warming problems.
The Silurian period occurred before the Neogene period.
I hope this helps.
