Plankton

Question 1

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

Question 2

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

Question 3

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	algae
	zooplankton
	the ocean
	prokaryotes

Question 4

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	prokaryotes
	zooplankton
	phytoplankton
	eukaryotes

Question 5

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

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	True
	False

Question 6

Zooplankton are tiny animals.

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	True
	False

Question 7

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

Question 8

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	drifting or wandering
	microscopic
	aquatic (water-living)
	plants