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Ecosytem Test Study guide and answers Test Nov 2nd
Due Date: 11/1/2017
Subject: 6th Grade Science

Study Guide for Ecosystem Test

1.       Water, sunlight, temperature, soil, and air are________________.

2.       All the ducks living on a lake at the same time make up a _________________.

3.       A population of squirrels and all the populations they interact with make up a ______________.

4.       A coral reef is an example of an _____________.

5.       Scientists call tropical rainforests _________________.

6.       Biomes, communities, and populations are part of the _____________.

7.       The number of individual organisms that occupy a definite area is called population_________.

8.       If the amount of food in an area can support only a certain number of deer in a population, the amount of food is called a _________ ___________.

9.       The pond a frog lives in is called its ________________.

10.   Any living or once living organism in the environment __________ ___________.

11.   List at least three biomes we discussed in class>>>> _________________ _____________ ___________.

12.   What might cause an increase in the snake population of a forest?



13.   What is an organism’s role or job?

14.  If a disease strikes the snake population in a food chain, what will happen to the populations of hawks?

15.  What level of organization comes after population?

16.  What word describes a community of organisms and their environment?

17.  36 . Limiting factors determine an area’s carrying capacity because

18.  The largest population an environment can support is its

19.   What is the study of interactions among organisms and their environment?

20.   Any biotic or abiotic factor that limits the number of individuals in a population is a _________ _________.

21.   What is made up of all populations in an area?

22.   What is the term for the total number of individuals in a population occupying a certain area?

23.   What are all of the individuals of one species that live in the same area at the same time called?

Fill in the blank.

All living things have needs, In order to survive, living organisms need air to breathe, water to drink, food to eat, and a place to live. The surroundings in which an organism lives is called the 24. __________. Here, the organism is provided with all the specific things it requires to survive. An environment is made up of living, or 25. ________ , and non-living, or 26. ___________ parts. Living parts of the environment include all of the organisms there. Non-living parts include soil, water, and air, as well as other things like the weather and temperature. The part of an environment in which an organism lives in is called its 27. _____________. Organisms of the same species living in the same environment at the same time make up a 28. _____________. Here organisms interact with each other. Decomposers may cause a dead tree to decay, which provides nutrients for the soil. An 29. ____________ is made up of a community and all of the non-living parts of its environment. The main source of energy for an ecosystem is sunlight. This source provides energy for producers to make their own food. Plants provide food for organisms that are consumers and cannot make their own food. Every organism has a specific role in an ecosystem. This is called its 30. ________. This includes everything an organism does and everything it needs.

31. List the seven levels of organization in an ecosystem from largest to smallest.

Label the following with words from the word bank.


Ecosystem     Community       Biome       Organism       Population         Biosphere



32. Snake _______

33. Snake, mice, small birds, crickets, hawks, cactus, tumbleweed ___________

34. The entire planet Earth ______________

35. The plants, animals, water, air, rocks, and sand ______________

36. A desert ______________

37. All snakes in the area ______________

38. Why do populations of organisms decrease in an ecosystem?

39. What are some characteristics that describe populations


40. The part of Earth that supports life is the _____________

41. The carrying capacity of the environment limits population size. True or False

42. List three populations that might live in each biome.



                Deciduous Forest:


                Tropical Rainforest:


1.       Abiotic factors                                                                                                   41. True

2.       Population                                                                                                          42. Savanna: Giraffe, Zebras,

3.       Community                                                                                                                        Elephants, etc.

4.       Ecosystem                                                                                                                 Deciduous Forest: Deer,

5.       Biomes                                                                                                                                rabbits, birds, etc.

6.       Biosphere                                                                                                                  Tropical Rainforest: frogs,

7.       Density                                                                                                                                 snakes, monkeys, etc.

8.       Limiting factors

9.       Habitat

10.   Biotic factor

11.   Tundra, rainforest, Taiga, Tropical Rainforest, Desert, Savanna

12.   An increase in the population of mice

13.   Niche

14.   Decrease

15.   Community

16.   Eocsystem

17.   Animals need resources to survive

18.   Carrying capacity

19.   Ecology

20.   Limiting Factor

21.   Communities

22.   Population Density

23.   Population

24.   Environment

25.   Biotic

26.   Abiotic

27.   Habitat

28.   Population

29.   Ecosystem

30.   Niche

31.   Biosphere, biome, ecosystem, community, populations, species, organism

32.   Organism

33.   Community

34.   Biosphere

35.   Ecosystem

36.   Biome

37.   Population

38.   Disease, predators, natural disasters, carrying capacity, limiting factors

39.   Size, spacing and density

40.   Biosphere