Enormous amounts of carbon are stored in fossil fuels when humans burning fossil fuels large amounts of carbon dioxide are released rapidly into the atmosphere what is the main scientific concerned about having too much carbon dioxide in the atmosphere

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

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind