Which of these is measured during a scientific investigation? (4 points) Test variable (independent variable) Outcome variable (dependent variable) Control group Hypothesis

In what for do plants utilize nitrogen? why do they need nitrogen?

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?