1. Which of these is an example of chemical weathering?
O Plants wedge their roots into cracks in rock and push it apart.
O Acid rainwater seeps into the ground and dissolves limestone.
O Gravitational force pulls rocks to the bottom of a mountain.
Rock pieces carried by river water wear away pieces of rock in the riverbed.

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Which example would the nurse consider to be a part of systems thinking theory?