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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	plants
	drifting or wandering
	aquatic (water-living)
	microscopic

Question 3

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

Question 4

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

Question 5

Zooplankton are tiny animals.

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	True
	False

Question 6

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

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	True
	False

Question 7

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	algae
	the ocean
	zooplankton
	prokaryotes

Question 8

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	phytoplankton
	eukaryotes
	zooplankton
	prokaryotes