Which label belongs in the region marked X? O produces neutrons
O forms heavier atoms
O joins two nuclei
O forms lighter nuclei
Brian creates the diagram below to organize his notes
on nuclear fission and fusion.
Fission
Fusion
X
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the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

human didn't come from monkeys man i hate these stupid teachers

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

the growth of the plants is affected by the heat of the light. what is the student doing?