Try This question out and I’ll award you brainliest

H2O

Explanation:

you have H4 on the left and H2 on the right therefore you need 2 more Hydrogen molecules to complete H4

(I think) common sense? for me xd

What are the options?

Explanation:

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

make   gliitsh plesea   !