ECOLOGY VIDEO REVIEW: https://www.youtube.com/watch?v=7WputPwvec0
(14.00 minutes)
1.___________________- Studies the___________________ between the _____________ and
_____________components (parts) of an ecosystem.
2.___________________ Factors = anything that is _______________or was once alive
3.___________________factors = __________________ factors associated with the living organisms in an ecosystem.
4. Ecosystems are organized from the simplest to the most complex:
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5. Habitat vs. Niche –
______________________ is where a species ________________. Example: ___________ _____________________
refers to what a species does and how it _________________. Example:_____________
6. ____________________________(variety of organisms in an area) = A wide variety of species within populations and
ecosystems lead to _________________________. Forest Clear cut _________________ biodiversity.
7. _____________________________ species – holds together an ecosystem.
Example__________________________________________________________________________________________
**A change in the health and numbers of the keystone species give a good indication of the __________________ of an
ecosystem.
ENERGY FLOW IN AN ECOSYSTEM:
8. Flow of energy begins with the _______________________. Plants convert energy into carbohydrates that get eaten
by ________________________ who then get eaten by _____________________________.
FOOD CHAIN/FOOD WEB
9. Trophic levels:
1- ___________________________(Autotrophs) Niche______________________Example:___________________
2- ____________________________(Herbivores) Niche______________________Example: __________________
3- ____________________________(Carnivores) Niche______________________Examples__________________
**______________________ can be primary, secondary, or tertiary consumers.
10. _________________________ - show all possible feeding relationships in an ecosystem.
11. Energy Pyramid= ONLY _________ of energy is passed to next level in a food chain.
____________________ of energy is lost as heat and for bodily functions.
SPECIES INTERACTIONS
12._______________________ Relationships exist between living things. This allows many different species to live in
the same area.
13. Types of Symbiosis:
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______________________– Both species Benefit
______________________ – One benefits, the other is unchanged
Parasitism - one _____________ & the other is ______________.
Predation – One _________________ & the other is ______________.
14. _________________________ Capacity - ______________________ population size a certain environment can
support for an extended period of time.
15. _________________________ Factors- environmental factors that limit the__________________, abundance, or
distribution of a population of organisms in an ecosystem.
CYCLES OF MATTER16. ___________________________- Cycling of water between ocean, atmosphere, and land.
*Water enters atmosphere by ________________________________ from bodies of water and transirpation from
leaves of plants.
17. ___________________________- Carbon is cycled through living things (organic components), the atmosphere
(CO2), in rocks and soil (CaCO2), and underground (fossil fuels).
*CO2 is taken in by plants and converted to organic compounds which are _________________ by animals who break
them down and __________________ CO2 back into the atmosphere.
18._____________________________– Nitrogen is naturally found in air (78% N2).
* Cycles through the environment when animals ___________________ a waste product into soil and water, it’s taken
in through plant roots, incorporated into amino acids & protein, which are eaten by animals.
Renewable Vs. Non Renewable Resources
19. _________________________________- natural resources that once consumed (used) _____________ be replaced.
Examples of non-renewable resources:
_____________________________________- Natural resources that __________ be replaced.
Examples of renewable resources:
20. Fossil fuels include: ________________________________________ & make energy to power __________, produce
_________________________, heat _____________________, cook ___________________.
21. Impact of fossil fuels – Burning increases ______________________ gases like (ex:
) into the air.
*__________________ of the earth due to the presence of greenhouse gases is called _________________________.
22._______________________________________-refers to the use of earth’s resources to make them last well into the
____________________________. Many natural resources are finite, meaning there is a ________________ supply.
Example: _______________________________________.
*Exponential HUMAN growth is straining resources.
23. _________________________________________________ is a gradual process of change and replacement of the
types of species in a community.
24. _______________________________ is a type of succession that occurs on a surface where no ecosystem existed
before. ________________________________________ occurs on a surface where an ecosystem has previously
existed.
25. __________________ species - a species that colonizes an uninhabited area.
_______________________ Community – the final, stable community in equilibrium with the environment.
26. BIOMES: Climax communities over large geographical regions are known as __________.
Examples:
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____________________ - average _________________________ and __________________ determine the biome.