Why do many desert plants have small leaves?
leaves that have a small surface area lose less water.
small leaves protect desert plants from animals that eat plants.
small leaves protect desert plants from pollution.
deserts are cold, and small leaves hold in heat.

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.