The Port of Toronto is one of the largest inland ports in Canada. It is part of the system of marine traffic. Commercial and recreational boats are part of this system. What is the input of this system? What is the output? Name a subsystem you can identify for this system?

the answer is D

Explanation:

the organisms are not adapted to live in some communities or habitats.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.