Which can move?
Options:
- (A) Raft
- (B) light energy
- (C) vehicles
- (D) insects
- (E) protists
- (F) bicycle
- (G) animals
- (H) an object
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Let's think first: Most protists have motility. All animals are motile, moving about at some point in their life cycle. Most protists are able to move.... So the answer is [(E)]


Animals can compete for territory, water, food, or what?
Options:
- (A) environment
- (B) bosses
- (C) transportation
- (D) vegetation
- (E) plants
- (F) Energy.
- (G) partners
- (H) energy
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Let's think first: Animals may compete for territory, water, food, or mates. Mating Ducks usually look for a mate or partner in winter. Animals may compete for territory, water, food, or partners.... So the answer is [(G)]


Why does vesicle transport need energy? 
Options:
- (A) it helps plants in growing
- (B) to prevent movement
- (C) for movement of substances
- (D) during the day
- (E) Transfers energy
- (F) flow of electrons
- (G) to breath
- (H) magnetism
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Let's think first: Vesicle transport requires energy, so it is also a form of active transport. Active transport involves movement of substances against a chemical gradient. Vesicle transport requires energy for movement of substances against a chemical gradient.... So the answer is [(C)]


Cells do not include
Options:
- (A) harmful substances
- (B) sulfate particles
- (C) the smallest agent of disease
- (D) direct damage to the lungs
- (E) sub-units of species
- (F) Inches or fractions of inches.
- (G) Something with a head, thorax, and abdomen
- (H) Direct sunlight.
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Let's think first: Viruses are not cells. Viruses Viruses are the smallest agents of disease. The smallest agents of disease are not cells.... So the answer is [(C)]


Fungi spores can multiply through what?
Options:
- (A) natural selection
- (B) trees
- (C) mitosis
- (D) sun's heat
- (E) death
- (F) Conifers
- (G) Deposition
- (H) pregnancy
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Let's think first: Fungi spores can develop into new haploid individuals without being fertilized. Haploid cells multiply asexually through mitosis. Fungi spores can multiply through mitosis.... So the answer is [(C)]


What can be determined by the average number of people per one unit of area?
Options:
- (A) hygeine
- (B) emissions
- (C) animals
- (D) growth
- (E) forces
- (F) health
- (G) education
- (H) people
--

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
Let's think first: Population density is the average number of individuals per unit of area or volume. Another measure of growth is population density. Growth of an area can be determined by the average number of people per unit of area.... So the answer is [(D)]