What is the principle of dominance?

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

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.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above