Summarize the connection between the heart and the lungs

What is the name for a substance formed in a chemical reaction

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.

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist