Which statement best describes the roles of photosynthesis and cellular respiration in the carbon cycle?

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters