Describe how carbon is cycled through the environment in the carbon cycle. Include an explanation of how photosynthesis, cellular respiration, and carbon dioxide are involved in the carbon cycle.

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?

1. beginning with all chambers of the heart in the "relaxed" phase, describe the cardiac cycle in mammals, with systole and diastole of the atria and ventricles. for each time point in the cycle you select, state the following: • whether the atria and ventricles are contracting or relaxing • whether the av valves and semilunar valves are closed or open • whether the pressure in the atria and ventricles is high or low

Which is an example of precipitation. 1snow 2clouds 3natural gases 4organic matter