Nutrient Removal of Plants from Soil- Science Project Idea
How plants remove needed materials from the soil.Review what we have already learned concerning how the roots of plants are fitted to take in water.Since the dissolved mineral substances in the soil are taken in with the water, the adaptations of the roots for taking in water [...]

Nitrogen and Its Importance to Plants- Science Project Idea
How nitrogen may be given to the soil.Nitrogen is found largely in the organic part of the soil, and consequently the addition of plant and animal material will increase the stock of nitrogen.One form of organic matter put upon the soil is horse manure.In some parts of [...]