Which best describes a group of organisms that is considered a species

Which element provides strength to the exoskeleton of clams and oysters

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.

Resperation is a way to release carbon back into the atmosphere