How might planting a crop of soybeans and turning the plants under at the end of the harvest season help improve the soil in that field? It would add organic material and nitrate to the soil.
It would help break up the soil and add phosphorus to it.
It would increase the amount of ammonia and carbon in the soil.
It would make the soil richer in phosphorus and potassium.

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.