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Enviro Studies > Unit 2 > Flashcards

Unit 2 Flashcards

1
Q

What are the 4 spheres?

A
  • atmosphere
  • lithosphere
  • hydrosphere
  • biosphere
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2
Q

What is feedback?

A

The output of the system

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3
Q

What is the formula to create nrg

A

Carbon dioxide plus water turns into glucose/sugar and oxygen

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4
Q

How much nrg is lost when converting from one organism to another

A

90%

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5
Q

What is nitrification?

A

Ammonia converted to nitrate by nitrifying bacteria.

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6
Q

What is N fixation

A

N2 turn into amonia due to bacteria in the ground

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7
Q

What is denitrification

A

Nitrate converted back into N2

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8
Q

What is amoniafication

A

n waste generated

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9
Q

How does bacteria create protein

A

They take up nitrates

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10
Q

How does the phosphorus cycle differ from the carbon and nitrogen cycle

A

There is no phosphorus in the atmosphere

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11
Q

How many species are there?

A

3.6-100 million

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12
Q

What are the factors in variation of species

A

Geographical isolation
Latitudinal gradient
Age of ecosystem
Structural complexity

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13
Q

What are the 3 measurements to evaluate biodiversity?

A

Richness of the species: # of species in ecosystem
Species evenness: # of individual species
Dominance

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14
Q

What is a species?

A

Same in genetic characteristics and has viable offspring

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15
Q

What is population?

A

Number of individuals of same species in area

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16
Q

Why is a community?

A

All living in common area

17
Q

What is an ecosystem?

A

Non living plus living in an area

18
Q

What is a landscape?

A

Interacting ecosystems

19
Q

What’s a ecological niche?

A 
- represents a multi-climatically view of everything an organism does:
Adaptation
Use of resources
Interactions with other organisms
Lifestyle
20
Q

What is symbiosis-mutualism?

A

Sharing benefit for both organisms ex. Bees and flowers

21
Q

What is symbiosis-commensalism?

A

One organism benefits, on does not notice.

22
Q

What is Symbiosis parasitism?

A

One organism benefits and one loses.

23
Q

What is predation?

A

Consumption of one organism by another

Enviro Studies (7 decks)

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