Photosynthesis and respiration affect atmospheric CO2 levels on a timescale, whereas volcanic eruptions affect atmospheric CO2 levels on a timescale.

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Match with o for organic and i for inorganic for each compound

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity