C.Adenine and guanine<span> are </span><span>purines in DNA.</span>
Answer: the three types of freshwater are swamp,bog and marshes
Explanation: similarities between them
They are all covered with shallow layers of water during some or all of the year.surface water comes from streams,rivers,lakes,ponds and oceans and the Earth's surface.
Difference between them
Bogs are found in cooler northern areas,tends to be acidic and contain many mosses
Swamps are many trees and shrubs and are found in the warm and humid southern United State
Marshes are usually grassy
Answer;
C) decreasing the concentration of an enzyme
Explanation;
-Environment factors such as temperature and pH affects the activity of an enzyme. Changing these conditions alters the rate of the reaction caused by the enzyme.
-Each enzyme works at certain optimal conditions such as optimal temperature and optimal pH, thus increasing temperature and pH to optimal levels will increase the rate of enzyme reaction.
-Changing the concentration of enzyme and substrate will also affect the rate of reaction of an enzyme-catalyzed reaction. Increasing enzyme concentration increases the rate of enzyme activity.
<span>The event that a "the first male has had a kidney stone" and b "the second male has had a kidney stone" is true. Random selection is used by the medical researcher in selecting two males from the population. Since simple random sample is defined as a subset of a statistical population wherein each member has an equal probability of being chosen, even if the probability is only 8%, males a and b may really have had a kidney stone. </span>
