How do we know that climate has changed over time

What would be the most likely result if the ph of the stomach were increased to 5

Which characteristics are typical of a human population in the postindustrial stage?

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present