Energy flows through an ecosystem through the food chains. smaller bugs are eaten by bigger bugs and bigger bugs are eaten by animals. etc. energy flows through each organism and light!
They recommend "adults eat just over half a pound of meat per week"
We eat “half a pound” of meat
I'm not entirely sure but I think this is true (?) because rescue breathing should only be used if any of the following happened to the victim: drowning, drug overdose, collapse due to breathing problems, an unresponsiveness in infants or children, an unconsciousness adult that isn't breathing normally, and if they are having prolonged cardiac arrest.
Hope this helps! :)
I would say the answer is All of the above