Order the events as they would appear in levels of organization from smallest to largest. __1__ Arctic Tundra along with the grasslands, oceans, and deserts __2__ fresh cold water, Pine tree, Dry Grass and small plants, Caribou, __3__ Caribou __4__ Pine tree, Dry Grass and small plants, Caribou __5__ Group of Caribou __6__ Caribou grazing in the dry climate and cold temperatures of the Arctic Tundra

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.