science y9 crossword

5. the process by which green plants and certain other organisms transform light energy into chemical energy
8. Electric potential difference or force that drives electric current.
10. a green pigment, present in all green plants and in cyanobacteria, which is responsible for the absorption of light to provide energy for photosynthesis
13. Any substance or mixture of substances intended for preventing, destroying, repelling, or mitigating any pest
14. a substance that is toxic to plants, used to destroy unwanted vegetation
16. the opposition to the flow of electric current in a conductor.
17. a non-metallic, inorganic material typically made from clay.
18. a large molecule made of repeating subunits
19. The central part of an atom containing protons and neutrons.
20. tiny openings or pores in plant tissue that allow for gas exchange

1. Upward force exerted on an object immersed in a fluid.
2. used to measure electric current in amperes.
3. a type of plastid (a saclike organelle with a double membrane) that serves as the site of photosynthesis
4. A fertilized egg formed by the fusion of gametes.
6. a substance used for killing insects
7. Differences within a group or set.
9. To receive traits or characteristics from parents or ancestors.
11. the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration
12. the characteristic of a material that is prone to breaking or shattering when subjected to stress or impact.
15. A subatomic particle with a negative charge orbiting the nucleus.