What are the three general types of amino acids? A) positive, negative, and noncharged B) α helices, β sheets, and looped segments C) hydrophobic, polar (noncharged), polar (charged) D) covalent, noncovalent, and van der Waals forces E) acidic, basic, and neutral

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

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel

In "the pig," what is the main effect that the piglet initially has on kibuka?