Brainliest to the first correct answer Human beings are:

2nd order consumers
1st and 2nd order consumers
producers
1st order consumers

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

whats the answer to your question?

d.embryo is the correct one

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.