Biofuels are emerging as an alternative energy source. they are made from renewable materials. all of the following materials can be used as a biofuel energy except

plant waste
animal waste
empty plastic milk jugs
farm crops

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !

fast by juice wrld

explanation:

the answer to your question is false can’t remember who he rode with but he rode with sombody