What is the main agent of erosion that has shaped much of earth's surface?

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

What does the positioning of transcription factors determine?

Wich is not standing in the way of astronomers getting a good view of different star