PLEASE HURRY PLEASE Don't report my question. I REALLY need help. Fill-in-the-blanks.

Nitrogen Cycle

Nitrogen Fixation: Nitrogen from the air has to be converted Nitrites & Nitrates for organisms to use them. Nitrogen fixing bacteria in the soil and nitrogen fixing bacteria in root nodules can produce . Some nitrogen is also "fixed" when Lightning Strikes, which converts N2 Gas to nitrates. : convert nitrogen in organic waste compounds or compounds form organisms into .

Plants cannot use free nitrogen present in the air. This nitrogen molecule is converted into nitrates and nitrites which can be taken up and used to make the required molceule. This is called nitrogen fixation which can be done by the bacterias that live in the root nodules of leguminors plants.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

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