Which layer of Earth's atmosphere is most strongly affected by conditions on the sun's surface?(1 point) mesosphere

troposphere

stratosphere

thermosphere

Which is it a characteristic of the animal kingdom? a. they include both vertebrates and invertebrates b. their skin is covered with hair or fur c. they are heterotrophs d. they are eukaryotic

This organism is not capable of performing photosynthesis. (horseshoe crab) true false

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.