Harvey was training for a cross-country bicycle race. during his practice run, harvey's tire went flat and he fell off of his bike, cutting both knees. he was worried that he would not be able to compete in the race being held in two weeks, but his father told him not to worry: his knees would be healed by then. what process is responsible for new tissue growth and the healing of harvey's knees?

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