Across
- 3. things that exist in the world without human intervention or are not made by humans.
- 5. the small particles that make up the nutrients in our food, such as carbohydrates, proteins, and fats. Our bodies break these down to get energy.
- 6. the ability to do work or cause change. It comes in various forms, such as light, heat, and motion.
- 9. the process by which plants make their own food using sunlight, carbon dioxide, and water to produce glucose and oxygen.
- 10. things that are made by humans, usually through chemical processes, and do not occur naturally.
- 11. a type of nutrients found in food that our bodies use for energy. They are also important for the proper functioning of our cells.
- 12. a method of growing plants without soil. Instead, plants are grown in nutrient-rich water.
- 15. anything that has mass and takes up space. It can exist in the form of solids, liquids, or gases.
- 17. organisms, like bacteria and fungi, that break down dead plants and animals into simpler substances.
- 18. a type of sugar that is a primary source of energy for living organisms.
- 20. nutrients that help build and repair our body tissues. They are found in foods like meat, eggs, and beans.
- 21. structures within cells that produce energy through cellular respiration.
- 22. the results or products that come out of a system or process. They are what the system produces or delivers.
- 23. a unit of measurement for the energy content of food. They represent the amount of energy our bodies get from consuming food.
- 24. the things or information that are put into a system or process to produce an output. They are the starting components.
Down
- 1. a type of nutrient found in food, like bread and pasta. They are an important source of energy for our bodies.
- 2. are structures in plant cells that contain chlorophyll, a green pigment necessary for photosynthesis.
- 4. the process where plants release water vapor through small openings in their leaves called stomata.
- 7. organisms, usually plants, that make their own food through processes like photosynthesis.
- 8. organisms that obtain their food by eating other organisms, either plants or animals.
- 13. a measure of how much water vapor is in the air compared to the maximum amount it could hold at a given temperature.
- 14. a group of related parts that work together to perform a specific function or achieve a particular goal.
- 16. the process by which cells break down glucose to release energy for various cellular activities.
- 19. tiny openings on the surface of plant leaves that allow them to exchange gases like oxygen and carbon dioxide with the environment.