Question 1

Plants help humans breathe by releasing __.

Question 2

Water quality is improved in areas with many plants because plants __ runoff water before it reaches our waterways.

Question 3

If a certain bird species lives on the fruit of one kind of tree and that tree goes extinct, it is very possible the bird will __.

Question 4

How old is the oldest known plant fossil?

Question 5

Humans currently use plants for all of the following except __.

Question 6

Most of a plant’s photosynthesis occurs in the __.

Question 7

Flower petals are usually brightly colored in order for plants to attract __.

Question 8

The art, science, technology, and business of growing plants is known as __.

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