Write 1-2 thoughtful paragraphs about what you now understand about a) how the five lines of evidence support the theory of evolution, b) what still confuses you, and c) what new questions you have.

Select all the true statements about the cosmic microwave background radiation

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.