True or false Mutations have adapted the H1N1 virus for life in both birds and humans and for transmission from bird to bird and bird to human.

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat