Understanding Biogeochemical Cycles

Who is George Rhoads and what is he known for?

• A scientist specializing in biogeochemical cycles

• An environmental activist

• A museum curator

• A kinetic sculpture artist

How does energy from the sun and the earth contribute to biogeochemical cycles?

• Generating electricity

• Driving cycles like the water and rock cycles

• By heating the earth's surface

• Creating wind patterns

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What is the significance of the water and rock cycles?

• They only affect the ocean

• They are unrelated to biogeochemical cycles

• They help in the movement of nutrients

• They are purely geological phenomena

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How are nutrients moved around the planet?

• Via water and rock cycles driven by solar and earth energy

• Through technological means

• Through human activities

• By animals migrating

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What does the conservation of matter on our planet imply?

• Matter is only found in living organisms

• Matter is constantly increasing

• We have a set amount of matter that moves between living and nonliving

• Matter can be created and destroyed

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What are the two worlds between which matter moves on our planet?

• Land and sea

• Urban and rural

• Biotic and abiotic

• Atmosphere and hydrosphere

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What is the biosphere?

• A type of biogeochemical cycle

• A conservation park

• An artificial ecosystem

• The part of Earth where life exists

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What demonstrates the conservation of matter in terms of biogeochemical cycles?

• The increase of matter over time

• The cyclical movement of matter between the biotic and abiotic

• The transformation of matter into energy

• The constant creation of new elements

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Complete the diagram using the options below.

a

b

c

d

e

f

Decomposition

Photosynthesis

Combustion

Cellular Respiration

Fossil Fuels

Carbon in the Atmosphere

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Organisms require nitrogen to make which of the following?

• glucose and starch
• lipids and nucleic acids
• proteins and nucleic acids
• carbohydrates and proteins

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