What was available to humans to make their tools before metallurgy? A: Humans used no tools.
B: Humans used their bare hands for tools.
C: Humans used wood, stone, and bones for tools.
D: Humans used natural metals they found on the ground.

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

b exhibiting favoritism toward the kikuyu people.

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a