Biogeochemical cycles
a. are not essential for life
b. move through abiotic and biotic regions
c. are the result of natural disasters
d. provide the greatest amount of energy for the earth

Look at the photo of the leaf. which term best describes this leaf?

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.

This is a biological reaction due to a stimulus. i need this quickly !