In the overlying cenozoic rocks, find no dinosaur species instead they find a great number of new mammal species which of the following best describes what is preserved in the cenozoic rocks.

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

coconut why: has water in it : )

air enters through the nose, moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi andbronchioles till the alveoli.