In a fox population, the allele frequency of a gene for red fur changes from 20 percent to 30 percent. what can be concluded about that population of foxes? a. the population is expanding b. the population is evolving c. the population is decreasing d. the population is not evolving

Which sentence best expresses the differing opinions of these two book reviews?

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

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?