To power a fan using a simple electric motor, the fan's shaft and blades are attached to a. the motor's rotating wire coil. b. the motor's stationary magnet. c. the gas tank fueling the motor. d. the battery powering the electromagnet.

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.

Which of the following forest management practices is best for reestablishing areas of forest?

This is the interaction of two organisms where one is and the other is neither nor harmed.