Heart valves can have disorders with consequences that vary based on whether they are mild or severe. Some examples of these disorders include stenosis (where valves may stiffen and do not work as well) and regurgitation (where valves may leak). Consider a severe mitral valve regurgitation. If this valve were to leak, based on your knowledge of the pathway blood takes through the heart, what problem would you expect to occur?

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat

Asmall population of chimpanzees lives in a habitat thant undergoes no change for a long period of time. how will genetic drift affect this population

Jason, a dog breeder, decides to mate a poodle with a golden labrador retriever. he wants to get puppies with the curly hair of the poodle and the color of the labrador. what concept is shown in this example? question 6 options: artificial selection adaptation evolution natural selection