Why was having a larger brain advantageous for early hominins? A made them able to walk upright
B It helped them to see better
С It increased intelligence helped them hunt and survive
D It prevented them from making dangerous weapons ​

C bc with larger brains more knowledge on how to hunt and this was helping them survive

Explanation:

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.