What is the symbiotic relationship between cuckoo bird and warbler?

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

In what layer of the sun is energy transfers between atoms

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation