Who was the first to attempt scientific classification of the organisms on earth

What is the best-known carbohydrate?

Which description provides the best objective summary of the article in the passage?

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.