You are presented with the question "Coal is used to produce the movement of electrons by what in coal-fire power stations?" and the following answer choices: - cooling - energy - rotating - burning - heat - engines - mining - sun's heat Now knowing that coal is used to produce electricity by burning in coal-fire power stations and electricity is really the movement of electrons, choose the best answer.
burning
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You are presented with the question "Where photosynthesis occurs in a cactus, what is stored?" and the following answer choices: - glucose - flowers - water - sand - gametes - birds - lipids - energy Now knowing that acactus stem is used for storing water and photosynthesis occurs on the green surface of the cactus stem, choose the best answer.
water
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You are presented with the question "a what can have a negative impact on ecosystem" and the following answer choices: - paper mill - A virus - deforestation - storm - disease - rainfall - tree - Pollution Now knowing that cutting down trees has a negative impact on an ecosystem and trees are cut down in the forest and are then sent to a paper mill, choose the best answer.
paper mill
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You are presented with the question "A fiber found only in mammals grows from a bulb under what?" and the following answer choices: - fur and fat - the mammal - light energy - the skin - the pelt - the animal - a cuticle - Exfoliation Now knowing that hair is a fiber that is found only in mammals and hair grows from a hair bulb under the skin, choose the best answer.
the skin
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