Wavelike contractions of the digestive tract that propel food along are called

Which of the following is the main purpose of a human community?

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.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.