a student wants to determine the effect of soil type on plant growth. he sets up three pots as shown below. how could this experiment be improved

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

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.

In what part of the body does the most muscle activity happen?