Basalt, formed from magma, contains iron-rich minerals. why is basalt important?
a. iron is magnetic and it triggers the reversal of earth's magnetic field.
b. iron is rich in nutrients and makes the soil easily identifiable.
c. iron is magnetic and records the orientation and direction of earth's magnetic field.

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

Aperson is outside exercising. body temperature begins to rise, and the person starts to sweat. their body temperature then returns to normal, and the body stops sweating. a positive b negative c allosteric d homeopathic

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box