in general, the largest component of bog soils is

organic matter

air

living organisms

water

Using complete sentences, describe the central economic problem facing all humans. why does this require people to make choices? how can this result in opportunity costs?

Discuss how relative and absolute dating are used to assign ages to rocks. specifically, how are the two dating methods different from each other? discuss the technique of absolute dating commonly used to date rocks.

What first caused people to consider that the continents were once one large landmass?