Which of the following is not a reason the nitrogen cycle is important to life on earth?
a.
all living things need nitrogen to make proteins.

b.
nitrogen is radioactive if it doesn’t go through the cycle.

c.
organisms cannot use nitrogen directly.

d.
all living things need nitrogen to make dna.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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