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Ecology Test
Overall test on Ecology
22
Science
7th Grade
04/27/2016

Additional Science Flashcards

 


 

Cards

Term
List biotic factors
Definition

any LIVING thing such as

trees, grass, cows, monkeys

Term
How do populations change in size?
Definition
They increase by birth and immigration, they decease by death and emigration.
Term
Which type of symbiosis is when BOTH species benefit?
Definition
mutualism
Term

Pioneer species are the ____________

species to populate an area.

Definition
first
Term
Which level is most of the energy available in the food pyramid?
Definition
bottom, the producer level
Term
During the water cycle, rain is an example of.....
Definition
precipitation
Term
Which biome is extremely dry, cold and has permafrost; and which biome has savannas?
Definition
tundra and grassland
Term
What are two main aquatic ecosystmes?
Definition
freshwater and marine
Term
How are organisms dispersed from one place to another?
Definition
wind, ater and other living things
Term
When the location of pollution can be identified, this is called?
Definition
point source
Term
Which of the following is a renewable resource?
Definition
wind, water, trees, sun
Term
What factors allow the human population to grow?
Definition

birth rate and death rate

medical care and technology

natural resources

Term
Name two strategies for managing sustainable yield of fish?
Definition
aquaculture and fishing limits
Term
What is a keystone species?
Definition
A species that influences the survival of many other species in an ecosystem.
Term
What is terracing and what does it help reduce?
Definition
leveled section of a hill to farm and it helps reduce erosion
Term
What is the burning of wastes called?
Definition
incineration
Term
How can air pollution be reduced?
Definition
ride a bike, carpool, turn off lights, to name a few
Term
What are the mjor sources of water pollution?
Definition
human activity
Term
Which of the following foods and products come from the ocean.
Definition
Shrimp, fish, and algae which is either eaten or is used to make: cosmetics, shampoos, ice cream.
Term
Name the 3 major fossil fuels
Definition

1. coal

2. oil

3. natural gas

Term
Name the sources of renewable energy..such as sunlight, water and ______________________.
Definition
wind, nuclear power, biomass fuels, geothermal energy and hydrogen.
Term
For most of human history, people burned _________ for energy.  Only recently have fossil fuels become the main energy source.
Definition
wood
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