40 points
in order for a cell in culture to get rid of wastes the concentration of waste must be
a) higher in the medium than the cell cytoplasm
b) lower in the medium than the cell cytoplasm
c) higher than the concentration of water
d) lower than the concentration of oxygen

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.

45 points how are people today being protected from tsunamis? earthquake data is analyzed to detemrine if a tsunami is likely, and if so, warnings are sent out. areas in tsunami risk zones are no longer heavily populated. radar is used to measure wave heights regularly. meteorologists study the winds to determine if wave heights will be large.

Moving down the ramp from 6 meters to