DC Environmental Biology - Semester Exam
Review Questions and Answers with Verified
Solutions | Latest Updated 2026
Give examples of both biotic and animals, plants, then rocks, sun, and water
abiotic components of an
ecosystem.
Define species group of organisms with similar traits to
breed
together
What is sustainability? Living without expending too many
resources
Define ecological footprint something's impact on world resource
Draw a basic food chain with five Grass > Bug > Mouse > Hawk >
levels, starting with producer. Decomposer
Label
the different levels of consumers
In a food chain, approximately 10%
what
% of energy can be passed to the
next level?
, What effect would deforestation Reduce euopotranspiration, increase
have on the water cycle? erosion, and
flooding
In the carbon cycle, name the Respiration, decomposition, volcanic
processes that increase carbon activity. Then
dioxide in the atmosphere and the photosynthesis, formation of CaCO3
processes that decrease carbon
dioxide in the atmosphere.
What is nitrogen fixation and what Convert nitrogen gas into a usable form.
organisms are able to fix nitrogen? Bacteria
uses it
What is the benefit of ozone in the UV radiation absorbed
stratosphere
Define and recognize predation: jaguar hunting sloths
Define and recognize herbivore: deer eats grass
Define and recognize competition: Mucullus, fish, all eat alge
Define and recognize mutualism: Clownfish help seaamendies scare away
predators
Define and recognize parasitism: Mistletoe takes away nutrients from trees
Review Questions and Answers with Verified
Solutions | Latest Updated 2026
Give examples of both biotic and animals, plants, then rocks, sun, and water
abiotic components of an
ecosystem.
Define species group of organisms with similar traits to
breed
together
What is sustainability? Living without expending too many
resources
Define ecological footprint something's impact on world resource
Draw a basic food chain with five Grass > Bug > Mouse > Hawk >
levels, starting with producer. Decomposer
Label
the different levels of consumers
In a food chain, approximately 10%
what
% of energy can be passed to the
next level?
, What effect would deforestation Reduce euopotranspiration, increase
have on the water cycle? erosion, and
flooding
In the carbon cycle, name the Respiration, decomposition, volcanic
processes that increase carbon activity. Then
dioxide in the atmosphere and the photosynthesis, formation of CaCO3
processes that decrease carbon
dioxide in the atmosphere.
What is nitrogen fixation and what Convert nitrogen gas into a usable form.
organisms are able to fix nitrogen? Bacteria
uses it
What is the benefit of ozone in the UV radiation absorbed
stratosphere
Define and recognize predation: jaguar hunting sloths
Define and recognize herbivore: deer eats grass
Define and recognize competition: Mucullus, fish, all eat alge
Define and recognize mutualism: Clownfish help seaamendies scare away
predators
Define and recognize parasitism: Mistletoe takes away nutrients from trees
