Changing in animals occurs by a process called what?
Options:
- (A) world climate change
- (B) It helps them survive
- (C) natural selection
- (D) Leptospirosis
- (E) ozone
- (F) relocation
- (G) permineralization
- (H) animal growth
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Let's think first: Evolution occurs by a process called natural selection. Actually, evolution is adaptation to change. Changing occurs by a process called natural selection.... So the answer is [(C)]

Plants can be infected by what?
Options:
- (A) human pathogens
- (B) infected meat
- (C) Pesticides
- (D) insects
- (E) human papillomavirus
- (F) viruses
- (G) fungi
- (H) bacteria
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Let's think first: Viruses infect and live inside the cells of living organisms. Plants are complex living organisms. Viruses infect and live inside the cells of plants.... So the answer is [(F)]

Something more complex in eukaryotes than prokaryotes leads to what?
Options:
- (A) harm them
- (B) sweating
- (C) Growth
- (D) illness
- (E) fever
- (F) parasites
- (G) death
- (H) recycling
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Let's think first: Cell division is more complex in eukaryotes than prokaryotes. Cell division leads to the growth of cells in the population. Something that leads to growth is more complex in eukaryotes than prokaryotes.... So the answer is [(C)]