C. Mercury is the answer. Mercury and Venus are the only two planets in our solar system that don't have moons
Answer:
ANSWER: C dictonary
Explanation:
I took the test it is C a dictonary
Red blood cells carry oxygen; white blood cells fight disease.
An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system.