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Mrs. Hund...Science...Unit B: Ecosystems
Unit B: Ecosystems
43
Science
4th Grade
09/18/2010

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Term
A --- is a group of parts that work together as a unit.
Definition
system
Term
There are two types of systems.  They are -- and --.
Definition
open and closed
Term
An example of a closed system is a ---.
Definition
terrarium
Term
An open system takes in --- and lets out ---.
Definition
inputs, outputs
Term
Inputs into an open system include:
Definition
sunlight, water
Term
Outputs in an open system include:
Definition
oxygen, water, fruit
Term

An example of an open system is a

--.

Definition
a school yard
Term
What are the basic parts of an ecosystem?
Definition
living things and the environment they live in
Term
Give examples of an ecosytem's environment.
Definition
rocks, soil
Term
What 4 basic things must an environment provide for the living things that live in that ecosystem?
Definition
food, water, shelter, space
Term
What are 4 examples of ecosytems?
Definition
forest, coral reefs, deserts, grasslands
Term
Some ecosystems can supply more food, water, shelter and space.  What is the result?
Definition
More animals can live there.
Term
A --- is a group of the same species living in the same place at the same time.
Definition
population
Term
--- is the group of organisms living together and interacting.
Definition
Community
Term
A --- is part of a community.
Definition
population
Term
--- means that over time the changes in a system cancel each out out, keeping everything in balance in the ecosystem.
Definition
Stability
Term

Most ecosystems have patterns whice give them

---.

Definition
stability.
Term
Give an example of patterns that create stability in an ecosystem.
Definition
changing seasons
Term
Give an example of instability in an ecosystem and the possible result.
Definition
An ecosystem with too many deer. Some deer might starve to death because there may not be enough plants to eat. Some deer may be forced to choose to leave an area to find food
Term
A --- is the enviornment or place that meets the needs of the organisms.
Definition
Habitat
Term
--- is the average weather of a place over a period of time.
Definition
Climate
Term
A --- is the role or the part the organism plays in its habitat or environment.
Definition
niche
Term
There are three levels to a food chain.  They are:
Definition
producers, consumers, and decomposers.
Term
--- are living things that make their own food.
Definition
Producers
Term
Another name for producers is ---.
Definition
plants
Term
--- are living things that eat other living things for energy because they can't make their own food.
Definition
consumers
Term
--- are the living things that feed on the wastes of plants and animals or the remains after they die.
Definition
Decomposers
Term
What are the nonliving parts of an ecosystem?
Definition
sunlight, soil, water, air, and temperature
Term
--- are areas near the equator that have a lot of rainfall and high temperatures year round.
Definition
Tropical rain forests
Term
Examples of habitats (homes) for animals in a tropical rain forest are:
Definition
canopy, forest floor
Term
--- is the variety of plants and animals
Definition
Diversity
Term
A --- --- has more species of animals and plants than any other ecosystem on Earth.
Definition
tropical rain forest
Term
--- --- are underwater ecosystems located  near the equator.
Definition
coral reefs
Term
Coral reefs are made up of the rocky skeletons of many kinds of animals called ---.
Definition
corals
Term
Corals are made up of tiny soft bodied animals called ---.
Definition
polyps
Term
Corals build --- --- skeletons around their bodies by taking calcium out of the sea water.
Definition
limestone skeltons
Term
--- is the amount of salt in something.
Definition
Salinity
Term
--- are one type of plant that can live in salt water.
Definition
Mangroves
Term
Ocean communites have groups of living things divided into three zones.  They are:
Definition
intertidal zone, near-shore zone, open-ocean zone
Term
--- are located in intertidal zones.
Definition
Estuaries
Term
Near-shore zones include the --- waters and also the continental shelf area.
Definition
shallow.
Term
What is an estuary?
Definition
An estuary is a body of water formed where fresh water (from rivers or steams) mixes with saltwater (in oceans).
Term
What special adaptations do estuary plants need?
Definition
Estuary plants must be able to live in water that changes in the amount of salt (salinity) that is in the water.
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