Define adaptation as a change that improves the change of survival for a species in a specific environment

The response is the basis for vaccination. primary secondary tertiary none of the above

The picture shows a location in india that is very dry and arid. notice the tall mountains in the background; you can find high amounts of vegetation on the other side of the mountains. which statement is most likely true for this area?

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin