Quiz 3.4

An organism that must get nutrients by eating other organisms is called a

• A. Consumer
• B. Producer
• C. Decomposer

Matter that organisms require for their life processes are

• Biogeochemical

• Nutrients

• Decomposers

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

The phosphorus cycle involves mainly the

• lithosphere and hydrosphere

• asthenosphere and hydrosphere

• stratosphere and lithosphere

Eutrophication of a body of water is often caused by the addition of

• A. carbon and/or proteins.

• B. lipids and/or hydrocarbons.

• C. phosphorus and/or nitrogen.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Nitrogen fixation can be accomplished naturally either by a lightning strike or by

• A. phtotosythesis

• B. denitrifying bacteria

• C. the Haber-Bosch process.

Tags

NGSS.MS-LS2-3

Most decomposers make their own food by photosynthesis.

• True

• False

Tags

NGSS.MS-LS1-6

Photosynthesis and cellular respiration can be considered the chemical reverse of each other.

• True

• False

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Global climate change is occurring. Almost all environmental scientists agree that emissions of certain gases could be contributing to it. Carbon dioxide, methane, nitrous oxide, ozone, hydrochlorofluorocarbons, and water vapor are the main culprits. These "greenhouse gases" have increased dramatically in our atmosphere in the last 300 years. Human activities, especially the mining and burning of fossil fuels for transportation and industry, increase greenhouse gases in the atmosphere. And increasing industrial activity in developing nations will likely lead to rising emissions of those gases. If unchecked, carbon dioxide levels in the atmosphere could reach twice preindustrial levels by 2050 and double again by 2100. Computer models show that this rise in greenhouse gases could raise Earth's temperatures by as much as 10 degrees Fahrenheit.

Which of the following gases are considered greenhouse gases?

• Methane

• Carbon Dioxide

• Ozone

• All of the above

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Nutrients circulate endlessly throughout the environment in complex cycles called

• eutrophication cycle

• photosynthesis cycle

• biogeochemical cycle

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the term for organisms, including plants and algae, that create their own food?

• Producers

• Carnivores

• Decomposers

Tags

NGSS.MS-LS1-6