Which phrase describes an ecosystem? A) a population of fish in a small lake
B) the wood of a rotting log
C) an entire desert, including abiotic and biotic factors
D) the community of organisms within a desert

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols

Animals have a variety of adaptations, including trachea and gills, which allow this key process to occur. which provides the molecules necessary for cellular respiration and efficient atp synthesis?