question: Bromeliads and cacti have adapted to very _ environments.
Options:
- (A) dry
- (B) wet
- (C) arid
- (D) cold
- (E) UV
- (F) warm
- (G) humid
- (H) fern
answer: Plants that are adapted to very dry environments are called xerophytes. Bromeliads and cacti are xerophytes. Bromeliads and cacti have adapted to very dry environments.
The answer is (A)

question: Rivers easily dissolve nutrients and:
Options:
- (A) bacteria
- (B) chemicals
- (C) oxygen
- (D) sodium
- (E) vitamin C
- (F) glucose
- (G) a solute
- (H) a hazard
answer: Running water is better able to dissolve oxygen and nutrients than standing water. Large, warm rivers hold populations but few occur in cold running water. Oxygen and nutrients dissolve easily in rivers.
The answer is (C)

question: Male dogs use_ in urine to mark their territory.
Options:
- (A) ammonia
- (B) Chemical energy
- (C) proteins
- (D) semiochemicals
- (E) animals
- (F) heat produced
- (G) nitric oxide
- (H) They have thick fur
answer: Male dogs use pheromones in urine to mark their territory. Pheromones are a sub-category of semiochemicals. Male dogs use semiochemicals in urine to mark their territory.
The answer is (D)

question: Which of the following do not grow using mitosis?
Options:
- (A) skin cells
- (B) genus
- (C) fungi
- (D) lung cells
- (E) blood cells
- (F) parasites
- (G) viruses
- (H) bacteria
answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Populations of viruses do not grow through cell division because they are not cells. Mitosis is cell division. Populations of viruses do not grow through mitosis because they are not cells.
The answer is (G)