Why is the incubating process necessary for the development of birds?

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

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome