1) "Rise sharply" means: a) increase very quickly b) decrease slowly c) stay the same d) fall rapidly 2) "The demand for" means: a) the price of something b) how many people want something c) the popularity of something d) the supply of something 3) "Figure out" means: a) guess randomly b) copy something c) understand or solve something d) ignore completely 4) Something "freely available" is: a) difficult to find b) expensive c) restricted access d) open for everyone to use 5) Essential nutrients are: a) things we dislike b) unwanted chemicals c) types of gases d) necessary substances for health 6) A greenhouse gas is: a) a type of liquid b) a gas that causes global warming c) a cleaning chemical d) a solid waste 7) Silkworm larvae are: a) young insects that make silk b) baby fish c) baby snakes d) young birds 8) Wasps are: a) harmless birds b) reptiles c) sea animals d) insects that can sting

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