Felipe has observed some changes on his plants in his orchard. Match the type of possible nutrient deficiency that his plants must be having.

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.

Ascientific idea becomes valid when it is what?

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast