Energy resources can be considered renewable and non-renewable. Renewable resources can also be classified as depletable or not based on whether they can ever be used up regardless of the level of consumption. Of the resources shown above, which combination of energy sources can be considered non-depletable?

A) Sun and wind
B) Coal and oil
C) Wind and coal
D) Trees and water

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 image shows labeled organelles that are present only in plant cells?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?