Why are the beak sizes and shapes of darwin’s finches different? a) they had different ancestors. b) they adapted to the type of predators. c) they adapted to the type of food available. d) they crossbred with different bird species.

a.indigo and cochineal

b.animal hides

c.silver and gold

e.cacao beans and sugarcane

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 !