| A | B |
|---|
| liquid | One of the fundamental states of matter with a definite volume but no definite shape. |
| mass | The amount of matter an object contains. |
| matter | A solid, liquid, or gas that possesses inertia and is capable of occupying space. |
| microscopic | Relating to an object too small to be visible without the use of a microscope. |
| mitosis | A process of nuclear division in eukaryotic cells during which the nucleus of a cell divides into two nuclei, each with the same number of chromosomes. |
| mixture | A physical combination of two or more substances that are blended together without forming new substances. |
| molecule | The smallest unit of matter of a substance that retains all the physical and chemical properties of that substance; consists of a single atom or a group of atoms bonded together. |
| muscular | Of or relating to or consisting of muscle; muscle is one of the contractile organs of the body. |
| mutualism | Any interaction between two organisms that benefits both, interdependence. |
| nervous system | The system of cells, tissues, and organs that regulates the body's responses to internal and external stimuli. In vertebrates it consists of the brain, spinal cord, nerves, ganglia, and parts of the receptor and effect or organs. |
| nucleus | The center region of an atom where protons and neutrons are located; also a cell structure that contains the cell’s genetic material. |
| omnivore | An animal that eats both plants and animals. |
| organism | Any living plant, animal, or fungus that maintains various vital processes necessary for life. |
| parasite | An organism that lives off of another organism by causing harm to it |
| parasitism | A relationship where one organism (called a parasite) lives off another (called a host). It may live on or inside the host. |
| photosynthesis | A chemical process by which plants trap light energy to convert carbon dioxide and water into carbohydrates (sugars). |
| physical change | A reaction; a change in matter from one form to another, without forming new substances. |
| physical property | A characteristic that describes a substance, such as size, shape, and texture; may be measured and observed. |
| pollution | Any alteration of the natural environment producing a condition harmful to living organisms; may occur naturally or as a result of human activities. |
| population | The number of people living in a place. |
