Write down two functions of a map

The first is to support research and advance knowledge into the medical, scientific, religious, therapeutic, and recreational uses and abuses of psychedelic substances and techniques.

Explanation:

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.