How does conduction differ from convection?

What are two reasons for why a species might disappear from the fossil record?

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance