Chemicals secreted by glands and transported through the circulatory system to organs and tissues are also known as

What provides structure to the human body?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?