The graph shown above is from one of the most well-known and on-going ecological studies ever performed. Isle royal national park, an island on lake superior, keeps data of populations of wolves and moose living there. the moose are a major food source. analyze the data to conclude how the moose population affects the population of wolves.

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

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.

The diagram shows the development of the oocyte and the follicle during the menstrual cycle. identify at which stage in the cycle the hormone levels are at their highest and most active.