Identify an independent variable of the researchers' experiment. Justify the scientists' feeding both groups of birds the same type and amount of food during
the experiment. Identify the control group for each species that the researchers
should include in their experiment.
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for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

it's c. (to reduce the greenhouse effect/carbon gasses)

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