Which of the following statements are true? Mass and matter are always the same
Mass can decrease while matter increases
Matter is made up of atoms and has mass
Ater does not exist in biosphere

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

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.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.