A food chain contains four trophic levels. The top-most level contains about 300 J of biomass. How much biomass (in J) do you expect to find in the bottom (i. e. primary producer) trophic level? Group of answer choices

30,000

3,000,000

300,000

300

30

Explanation:

According to the 10% rule

Top (predators)= 300J

Omnivores(secondary)= 3,000J

Herbivores(primary)= 30,000J

Plants(producers)= 300,000J

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d