Which Sentence from the section explains why finding the chemicals on Mars was important? A. Scientists also learned about the gas methane on Mars.

B. The gas might be stored in cold places scientists said

C. Inge Loss ten Kate is a scientist who studies life

D. The clues can tell scientists more about things that might have live on Mars

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s