1. our solar system was created by the gravitational collapse of the solar nebula.
2. our moon was most likely formed by a collision between earth and a mars-sized planetesimal.
3. the first few hundred million years of the solar system's history were the time of the heavy bombardment, during which earth suffered many large impacts.

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.

Click the item in the left column. use the plus sign to move it up or the minus sign to move it down until it matches the correct entry in the right column. lock your answer in place by clicking the square beside the item. (a checkmark means it is locked.) amazon basin a atacama desert b andes mountains c lake titicaca d peru e patagonia f brazil g chile h suriname

Plants in the tundra biomes have had to adapt to live long periods of time without a. cool temperatures b. sunlight c. oxygen d. water