The Chinese were not responsible for a. Submersibles
b. Watertight compartments
c. Rudders
d. Magnetic compass

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

What is the difference between how ionic and covalent bonds form

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?