Which of the following is not considered to be a rock? coal sandstone pumice lava

This question is only for applicants to scholars for medicine or scholars for dental medicine: what aspects about medicine (or dental medicine) intrigue you? describe how these aspects influence your life. (100-650 words)

How does photosynthesis show the conservation of mass and energy?

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone