How can molecules and extended structures be pure phosphorus

Which animal group is the largest and contains more species from all the other living groups combined? is it mammals or

Which process is involved in growing crops? irrigation transportation recreation condensation

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.