Biology TEKS 10.A

Roads are often built through forests for industrial purposes or as land is developed for residential and commercial needs. How would road construction through a forest most likely affect the ecosystem?

• Non-native species would replace native species

• The number of primary consumers would increase

• The natural succession of vegetation would change

• All producers would be eliminated from the community

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• Pink salmon were nearly eliminated after the oil spill

• Pink salmon populations steadily declined in the 10 years following the spill

• Pink salmon populations declined and never fully recovered

• Pink salmon populations seemed to be minimally affected

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• Reduced nutrients form the land support fewer producers in the sea

• Water trapped behind the dam causes the marine ecosystem to move inland

• The flooding in August through November causes marine life to be destroyed

• The water temperature of the sea has increased

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Why is the Sun important to life on Earth?

• The Sun's radiant energy is converted to food by plants in a process called photosynthesis

• The Sun's radiant energy is converted into liquid water

• Radiant energy from the Sun is absorbed and released in a delicate balance for life to exist.

• none of these

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Why is liquid water important for life to exist?

• Other life forms get thirsty just like humans

• Liquid water is important for rain to fall and wash the pollution from the surface of the planet

• none of these

• delivery mechanism, dissolving essential nutrients and delivering them to cells.

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What three things do Astrobiologists look for when searching for life beyond Earth?

• water vapor, and food

• food, water, and shelter

• liquid water, an oxygen containing atmosphere, and an energy source

• none of these

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• A

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