Cells that protect the body by engulfing foreign cells or producing antibodies are D. White blood cells.
The answer is "A hypothesis is tentative statement" and "A theory has a strong predictive power."
Synchroniser switch is in the "on" position.
Answer:
Gravitational force
Explanation:
Gravitational force is the force that attracts an object down to the earth. It’s also the reason why we don’t float on this planet. This force is also why anything that isn’t thrown up must come down.
In space and other planets with little or no gravitational force ,organisms float over there which makes its inhabitation by organisms very difficult.
