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Unit 1 - Year 7 (Review)
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Give three examples of how humans can affect ecosystems.
Deforestation, air pollution, water pollution, overpopulation, sewage, garbage, etc.
True or False? Pioneer species is the first species to arrive
True
True or False? Succession are not a predicable pattern of change
False, it is predicable!
True or False? A Biome is a small area without a definite climate and vegetation
False, it is a large area with a definite climate and vegetation
True or False? Decomposers are consumers that break down dead material
True
True or False? Omnivore consumes mainly animals
False, they consume animal and plant matter
True or False? Species is the same kind of living thing that can mate and produce more of the same kind of living thing
True
True or False? A food chain is a linear sequence of events that shows who eats whom
True
In the carbon cycle, carbon dioxide is taken from the atmosphere and used by a) first-order consumers b) decomposers c) second-order consumers d) producers
d) producers
You played in a meadow when you were little. When you visit the area again this year, you find it is a forest. What is the name of the change? a)extinction of species b)ecological succession c)pyramid of biomass d)carrying capacity
b)ecological succession
Evaporation, condensation, and precipitation are all part of which cycle? a) carbon b) nitrogen c) water d) ecologic
c) water
An undersea volcano erupts, creating the new island of Surtsey. Life slowly starts to appear on the island. What would probably be the first species to grow and survive? a) maple trees b) finches c) lichens d) grasses
c) lichens
Which of the following would decrease the amount of carbon dioxide in the air? a) a maple tree growing b) a dog running c) a person driving a car to work d) a forest burning
a) a maple tree growing
Biotic factors in a wetland community might include: a) water b) crayfishes c) temperature d) soil type
b) crayfishes
Which of the following would be an abiotic factor for a polar bear? a) extreme cold, floating ice      b) eating only live prey         c) large body size       d) paws with thick hair
a) extreme cold, floating ice
Organisms that can live entirely by themselves with absolutely no relationships to others are: a) predatory           b) biotic           c) producers          d) non-existent
d) non-existent
Which of the following is part of the abiotic community? a) food    b) fish     c) sunlight     d) trees
c) sunlight
The food relationships among all organisms that share the same environment are known as a:  a) food chain     b) food pyramid     c) food web      d) web of life
c) food web


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