Changes In Ecosystems Question Preview (ID: 58716)


Changes In Ecosystems. TEACHERS: click here for quick copy question ID numbers.

After soil is established, larger plants can grow and larger _________________ species can arrive.
a) animal
b) plants
c) habitat
d) secondary succession

When few, if any, living things exist in an area, _______________________will establish a first community.
a) secondary succession
b) primary succession
c) pioneer
d) animals

New ____________________ begin to grow in the soil.
a) animals
b) pioneer
c) plants
d) habitat

Ecosystems change over time. People cause some of the changes, through pollution, __________________ destruction, or hunting, or by introducing or removing ______________.
a) plants/animals
b) species/habitat
c) trees/plants
d) habitat/species

The first organisms to live in the area are called ________________ species.
a) pioneer
b) trees
c) plants
d) primary succession

Weeds, then shrubs, and finally ___________________ grow.
a) animal
b) trees
c) species
d) secondary succession

When land is burned by a fire, or a farm field is abandoned, ________________ occurs.
a) pioneer
b) primary succession
c) secondary succession
d) trees

Succession that occurs where there is no soil and where few, if any, living things exist is __________.
a) climax community
b) secondary succession
c) pioneer community
d) primary succession

In the final stages of succession, a(n) ___________ develops.
a) climax community
b) primary succession
c) pioneer community
d) pioneer species

The process of one ecosystem gradually changing into a different type of ecosystem is called _____________.
a) pioneer species
b) succession
c) endangered species
d) secondary succession

When a species dies out completely, the species is _____________.
a) endangered species
b) succession
c) extinct
d) pioneer species

One of the first species to live in an area that used to be lifeless is a(n) ______________.
a) secondary succession
b) pioneer community
c) climax community
d) pioneer species

A species that is in danger of becoming extinct is a(n) ______________.
a) endangered species
b) pioneer species
c) secondary succession
d) climax community

The establishment of a new community where a community had already existed is called ___________.
a) primary succession
b) secondary succession
c) climax community
d) endangered species

Establishment of the first living community to develop in an area that used to be lifeless is called ____________.
a) secondary succession
b) pioneer species
c) pioneer community
d) climax community

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