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Flashcards in Key Concepts Deck (20)
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1

Why is photosynthesis important?

-it converts solar energy into chemical energy or sugars
-recycles carbon dioxide into oxygen

2

Why is cell respiration important?

-breaks down sugars from photosynthesis (digestion) so it can be used by cells

3

How are photosynthesis and cell respiration connected?

The reactants are the products of the other and vice versa

4

Why is the water cycle important

Water regulates body temp and maintains body function

5

Why is the carbon cycle important?

Carbon in its form as carbon dioxide absorbs and traps the suns energy and heat to the earth
Carbon dioxide is essential for photosynthesis

6

Why is the nitrogen cycle important?

Nitrogen makes up amino acids which are proteins for your body. They make up your hair, skin, tissues, etc.

7

How can humans impact the nutrient cycles?

Runoff from fertilizer- combines with nitrogen and creates acid precipitation, creates algal blooms
Fossil fuels and habitat destruction/ fragmentation- too much carbon is produced

8

How do humans impact ecosystems?

Habitat destruction and fragmentation- conversion to urban and agricultural land, loss of wetlands and aquatic ecosystems
Invasive species- outcompete organisms and upset food webs
Pollution- oils spills, plastics causes damage to marine ecosystems

9

What is a sustainable ecosystem?

Can be maintained through natural processes and can keep characteristics over long periods of time
Doesn’t need human influences

10

How can abiotic factors affect carrying capacity?

If the resources are plentiful, the carrying capacity can increase
If they are less plentiful, the capacity will decrease

11

Terrestrial Ecosystem
Light
Temp
Nutrient
Water

Light- clear cutting
Temperature- global warming
Nutrient- farming practices
Water- irrigation, bodies of water drained or damned

12

Aquatic Ecosystem
Light
Temp
Nutrient
Salinity
Acidity

Light- erosion, stirring up water
Temp- heated waste
Nutrient- runoff
Salinity- salting highways, long term irrigation
Acidity- acid precipitation and fossil fuel burning

13

Benefits and Harms of Symbiotic Relationships

Mutualism-2
Predation- 1
Parasitism- 1
Competition-1
Commensalism- 1.5

14

Why should we save wetlands?

Clean Lakes
Erosion control
Global warming solution
Outdoor learning
Recreational spot
Minimizes flooding
Minimizes drought
Wildlife Habitat
Clean water
Disappearing

15

What affects oxygen levels in water

Temperature, farming practices, decomposition, photosynthesis, respiration

16

Bioaccumulation

The concentration of a substance in the body of an organism

17

Bioamplification

The increase of the concentration of a substance in the body of an organism

18

Algal blooms

When excess nutrients from runoff are in the water

19

Invasive species: how they thrive

Disease
Predation
Competition
Parasitism
Hybridization- when they interbreed, weakens gene pool
Habitat Alteration- Change the structure of habitat

20

Impacts if invasive species

Economic- damage to forests costs money
Ecological-compete with native species
Tourism- recreation spots are decreasing because species loss and reduced water
Health- pesticides causing pollution