My teacher wants me to make something that prevents pollution or could us not have it. any ideas that are easy to make? i don’t want to be carrying something big around school. it also has to be original. : )

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.

Are the layers of rock above and below the coal older or younger?

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient