Anaerobic pathways operate when is absent (or limited). Glycolysis is the first stage to yield 2 , 2 , and 2 . In the absence of oxygen, the reduced coenzyme used in glycolysis, , cannot donate its electrons to the electron transfer chain. Once it is oxidized, we call it .

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

Anton created a chart listing different types of materials. which best complete the chart?

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?