Which of the following is the best definition of the greenhouse effect? A. Warming of the Earth due to the absorption and recycling of heat by the atmosphere
B. Planting of trees in warmer areas to make them grow faster
C. Convection in the atmosphere to bring heated air to the surface
D. Heating of the ocean and land by radiation

I think it's either A or C, but I'm not sure which one.

Which best compares habitat and niche? o niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat.o habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat.habitat is a group of organisms that live in an area, and niche is a specific species that lives in that areao niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

During binary fission, what events must occur before the cell splits into two new cells?