Question

Which two items help the process of nitrogen fixation in the nitrogen cycle?

A: Respiration and photosynthesis.
B: Bacteria and lightning.
C: Excretion and secretion.
D: Transpiration and evaporation."

Answer 1

The process of nitrogen fixation in the nitrogen cycle is aided by nitrogen-fixing bacteria and lightning.

So, the correct answer is B.

Step-by-step explanation:

In the nitrogen cycle, two items that help the process of nitrogen fixation are bacteria and lightning. Nitrogen-fixing bacteria, such as those living in the root nodules of legumes and soil bacteria, can convert atmospheric nitrogen into compounds like ammonia, which can be used by plants.

Additionally, abiotic factors such as lightning can cause the atmospheric nitrogen to react and form bioavailable nitrogenous compounds. The correct answer to the question 'Which two items help the process of nitrogen fixation in the nitrogen cycle?' is B: Bacteria and lightning.

So, the correct answer is B: Bacteria and lightning.