What is not necessary for an organism to survive? O parents
O water
O energy
O a place to live

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

Speed is the ratio of the distance of an object moves to