In planning a space mission to mars, nasa officials are considering using solar panels to provide energy for many of the instruments on the planet's surface. using your knowledge of seasons and temperatures here on earth as a model, briefly outline the factors that would influence solar radiation on the martian surface.

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 organelle other than the nucleus houses dna in a eukaryotic cell?

Crossing over is a method of (blank)?