Plankton

Question 1

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	it kills large predators like sharks.
	it makes the water more acidic.
	it makes the water saltier.

Question 2

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	aquatic (water-living)
	plants
	drifting or wandering
	microscopic

Question 3

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	algae
	prokaryotes
	the ocean
	zooplankton

Question 4

Zooplankton are tiny animals.

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	True
	False

Question 5

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	Thousands of cells
	Hundreds of cells
	Millions of cells
	A few dozen cells

Question 6

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	Just for fun
	To scare away predators
	To attract a mate
	To see in the dark

Question 7

All plankton are microscopic (too small to see without a microscope).

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	True
	False

Question 8

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	prokaryotes
	zooplankton
	phytoplankton
	eukaryotes