Which is NOT true about nitrogen cycle? a. Organisms on Earth use nitrogen to build proteins necessary for cell
development.
b. The atmosphere is made of 78% elemental nitrogen that can be directly used by
organisms.
The nitrogen must be altered or fixed before it can be used by organisms.
d. The nitrogen is removed from air by the action of nitrogen-fixing bacteria which
lives in soil and roots of certain plants.

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.