English Review

3. consist of; be made up of
5. a layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed
7. perceptible by touch or apparently so; tangible
9. are segmented appendages that function primarily in chemoreception and mechanoreception
10. a formally concluded and ratified agreement between countries.
11. describes any group of people native to a specific region
13. absolutely necessary or important; essential.
16. continuous physical force exerted on or against an object by something in contact with it
20. become or cause to become incorporated into a liquid so as to form a solution.
22. of, for, or related to the nose
23. a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure. Modern astronomers divide the sky into eighty-eight
24. the outer limits or edge of an area or object

1. steal goods from (a place or person), typically using force and in a time of war or civil disorder.
2. a thin sheet of tissue or layer of cells acting as a boundary, lining, or partition in an organism.
4. watery liquid secreted into the mouth by glands, providing lubrication for chewing and swallowing, and aiding digestion.
6. relating to or used for navigation on a route.
8. the deliberate killing of a large number of people from a particular nation or ethnic group with the aim of destroying that nation or group.
12. relating to sensation or the physical senses; transmitted or perceived by the senses.
13. a tube that carries liquids such as blood through the body:
14. prosper; flourish.
15. intense and selfish desire for something, especially wealth, power, or food.
17. the red liquid that circulates in the arteries and veins of humans and other vertebrate animals, carrying oxygen to and carbon dioxide from the tissues of the body.
18. number of things of the same kind, growing or held together; a bunch: a cluster of grapes. a group of things or persons close together
19. the line at which the earth's surface and the sky appear to meet.
21. able to move smoothly along a surface.