An electrical subcontractor submits a bid to a contractor bidding on a school project. based on the electrical subcontractor's bid, the general contractor submits a proposal for the school project and is awarded the contract. the electrical subcontractor may no longer withdraw the bid to the general contractor based on

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