Unit 1.3 Biogeochemical Cycles

Multiple Choice

Where is carbon stored in the environment?

• Fossil fuels
• Wood of trees
• Calcium carbonate (shells and bones)
• All of the above

Multiple Choice

What is the most abundant gas in the atmosphere?

• hydrogen
• oxygen
• helium
• nitrogen

Labelling

Label the Biomolecule chart

Drag labels to their correct position on the image

insulation

Nucleic Acid

Proteins

Carbohydrates

builds and repairs cells

main source of energy

Lipids

genes that determine your traits

Labelling

Label the parts of the water cycle

Drag labels to their correct position on the image

Runoff

Groundwater

Transpiration

Evaporation

Condensation

Precipitation

Multiple Choice

Which is NOT a process of the water cycle?

• precipitation
• freezing
• transpiration
• evaporation

Multiple Choice

What happens during evapotranspiration?

• Plants absorb water through their roots

• Water evaporates from the surface of the ocean

• Water condenses into clouds

• Water freezes into ice

Multiple Choice

What is it called when water evaporates through plants' leaves?

• condensation

• evaporation

• sublimation

• transpiration

Multiple Choice

The process of plants losing water through their leaves is called ____.

• condensation
• evaporation
• transpiration
• exhaling

Multiple Choice

What is the hydrologic cycle?

• The movement of water on, above, and below the Earth's surface

• The process of evaporation and condensation of water

• The cycle of water turning into ice and melting

• The movement of water through plants and animals

Multiple Choice

Process where phosphorus is removed from the rocks through rain, temperature, etc.

• Weathering

• Uplift

• Leaching

• Assimilation

Multiple Choice

Process where phosphorus runs off into the water from the soil.

• Decomposition

• Excretion

• Assimilation

• Leaching

Multiple Choice

Humans have impacted the phosphorus cycle by burning fossil fuels, which has increased the amount of phosphorus in the air.

• True

• False

Labelling

Label the parts of the Carbon Cycle

Drag labels to their correct position on the image

Photosynthesis

Respiration

Fossil Fuel Formation

Burning Fossil Fuel

Multiple Choice

Which one of these does not add CO₂ to the atmosphere?

• cooking with gas

• planting trees

• burning wood

• riding in a bus

Multiple Choice

Process by which fossil fuels are burned and CO2 is released back into the atmosphere.

• Decomposition

• Ammonification

• Combustion

• Photosynthesis

Multiple Choice

Process where plants and animals release CO2 back into the atmosphere through exhaling.

• Photosynthesis

• Decomposition

• Respiration

• Uplift

Multiple Choice

Process by which animals obtain and digest nutrients by consuming plants or other animals.

• Assimilation

• Excretion

• Decomposition

• Respiration

Multiple Choice

Process where plants take in CO2 from the atmosphere to make their own food.

• Respiration

• Combustion

• Nitrification

• Photosynthesis

Open Ended

What are diatoms and why are they important?

Match

Match the following

• Ammonification

• Assimilation

• Denitrification

• Nitrification

• Nitrogen Fixation

production of ammonia during the decay of organic matter

absorbtion and incorportaion of nitrogen into plant and animal compounds

conversion of nitrate into nitrogen gas

production of nitrates from ammonia

converts nitrogen gas into ammonia & nitrates

• production of ammonia during the decay of organic matter

• absorbtion and incorportaion of nitrogen into plant and animal compounds

• conversion of nitrate into nitrogen gas

• production of nitrates from ammonia

• converts nitrogen gas into ammonia & nitrates

Multiple Choice

Why do living things need nitrogen?

• To get energy
• To make amino acids
• To make proteins
• To make proteins AND amino acids

Multiple Choice

Where are denitrifying bacteria found?

• In the soil
• Root nodules
• In dead things
• In the atmosphere

Multiple Choice

___________ is the most abundant gas in our atmosphere at 78%.

• Oxygen

• Carbon Dioxide

• Phosphorus

• Nitrogen

Multiple Choice

Process in which nitrogen can be fixed by lightning, bacteria, or industries.

• Nitrogen Fixation

• Denitrification

• Photosynthesis

• Weathering

Multiple Choice

Which is NOT a way that nitrogen compounds are added to the soil?

• Decay of dead organisms
• Denitrification
• Animal waste
• Nitrogen-fixation

Multiple Choice

Nitrogen can't be used directly from the atmosphere.

• True

• False

Multiple Choice

Process by which decomposers break down dead plants and animals and return the nutrients to the soil.

• Respiration

• Decomposition

• Assimilation

• Leaching

Multiple Choice

Process by which nitrogen is returned to the soil as ammonia after decomposition.

• Denitrification

• Nitrification

• Leaching

• Ammonification

Multiple Select

How have humans impacted the nitrogen cycle?

• Fertilizers

• Livestock farming

• Deforestation

• Mining

Multiple Choice

Biogeochemical cycles allow nutrients to be recycled and used over and over again.

• True

• False

Multiple Choice

Animals obtain nitrogen when they eat plants or other animals through the process called assimilation.

• True

• False

Multiple Choice

What do decomposers eat?

• only plants
• plants and animals
• only other animals
• dead organisms

Multiple Choice

During ________________ stage, water attempts to return to rivers, lakes, or the ocean.

• evaporation

• condensation

• precipitation

• runoff

Multiple Choice

Animals inhale oxygen and exhale....

• $$CH_4$$  

• $$CO_2$$  

• $$NH_3$$  

• $$N_2O$$  

Multiple Choice

Soil bacteria can take $$N_2$$  gas and break apart its triple covalent bond. This is called...

• Ammonification

• Nitrification

• Nitrogen fixation

• Denitrification

Multiple Choice

What is the main driving force behind the hydrologic cycle?

• Gravity

• Wind

• Sunlight

• Temperature

Multiple Choice

What is the role of clouds in the hydrologic cycle?

• They store water in the atmosphere

• They release water into the atmosphere

• They transport water from the ocean to land

• They absorb water from the ground

Multiple Choice

What happens to carbon dioxide dissolved in the ocean?

• It is used by phytoplankton for photosynthesis

• It is released into the atmosphere

• It forms calcium carbonate shells

• It becomes trapped in permafrost

Multiple Choice

What is the impact of burning fossil fuels on the carbon cycle?

• It releases stored carbon into the atmosphere

• It increases the amount of carbon in the ocean

• It causes carbon to be trapped in permafrost

• It decreases the amount of carbon dioxide in the atmosphere

Multiple Select

Decomposition is found during which of the following cycles?

Choose all the apply.

• Phosphorus

  Cycle

• Carbon

  Cycle

• Nitrogen

  Cycle

• Water Cycle

Multiple Select

Nitrogen is found in which of the following:

• Fats

  (lipids)

• Nucleic Acids

  (DNA + RNA)

• Proteins

• Carbohydrates

  (Sugar + Starch)

Multiple Choice

According to the diagram, geologic activity, such as volcanoes,

• Increases the levels of CO₂ in the atmosphere.

• Decreases the levels of CO₂ in the atmosphere.

Multiple Choice

What role do animals play in the carbon cycle?

• absorb carbon dioxide from the atmosphere
• give off carbon dioxide through respiration
• combustion
• decomposing matter

Multiple Select

Which of the following help convert nitrogen into usable forms? Check all that apply.

• blue-green algae/cyanobacteria

• burning fossil fuels

Multiple Choice

Deforestation by burning has been described as a "double whammy" to the environment, meaning it has 2 negative impacts. Why is this description accurate? 

• Forest burning releases CO₂ while decreasing oxygen, which disrupts cycles
• Deforestation reduces the amount of oxygen in the atmosphere, which depletes the ozone layer
• Forest clearing is often followed by land development, which often leads to increased noise pollution
• Deforestation increases the number of plant and animal species by destroying habitat

Multiple Choice

Human activities that degrade ecosystems result in a loss of diversity of the living and nonliving environment.  Two ways in which humans frequently harm ecosystems and affect other organisms is through land use and pollution.

How does land use cause a reduction in biodiversity? 

• It decreases the space and resources available to certain species
• It causes herbivores to become carnivorous
• It provides a more hospitable living environment
• It causes all the natural Earth cycles to stop

Multiple Choice

Humans are responsible for many negative changes in the natural environment. Which of the following best describes why humans have a profound impact on their environment?

• Humans are able to preserve scarce resources.

• Humans are able to modify habitats more than any other species.

• Humans have made attempts to preserve the environment.

• Humans have encouraged the development of wildlife refuges and parks.

Multiple Choice

Which nutrient is not cycled through the atmosphere?

• carbon
• nitrogen
• phosphorous
• water