Which term best describes the relationship between adélie penguins and crabeater seals? a. competition b. parasitism c. mutualism d. predation

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.