What process is believed to be responsible for the formation of the Grand Canyon? A. diverging tectonic plates
B. converging tectonic plates
C. caving in of the ground due to erosion.
D. erosion over a long period of time

Astudy was performed on 20 trees to test the effectiveness of a new fertilizer. the results of this specific study is brought into question. what would possibly improve the reliability of the results?

According to the cladogram, which organisms have roundworms as a common ancestor?

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.