5th-6th Grade Science Chapter 8 Review- Changes In An Ecosystem- Part 1 Question Preview (ID: 46478)


Chapter 8 Review - Changes In An Ecosystem. TEACHERS: click here for quick copy question ID numbers.

The gradual changes in the populations of organisms in an ecosystem are called ___.
a) succession
b) flood
c) drought
d) fire

When the last-known member of a species dies, the species is considered ___.
a) endangered
b) invsasive
c) native
d) extinct

When the population of a species is so small that the species may soon become extinct, it becomes ___.
a) endangered
b) invasive
c) native
d) extinct

Whenever an ecosystem receives more water than it needs, a ___ occurs.
a) succession
b) flood
c) drought
d) fire

Whenever an ecosystem receives less water than it needs, a ____ occurs.
a) succession
b) flood
c) drought
d) fire

Species that are not native to an ecosystem and can cause harm are ___.
a) extinct
b) native
c) endangered
d) invasive

True or False: Photosynthesis and respiration are part of the nitrogen cycle.
a) True
b) False
c) Elsa
d) Ana

True or False: Consumers get nitrogen compounds by eating other animals or plants.
a) True
b) False
c) Ariel
d) Ursula

True or False: Nitrogen is important for living things to grow and function normally.
a) True
b) False
c) Buzz Lightyear
d) Woody

True or False: Carbon dioxide is released into the air during decomposition.
a) True
b) False
c) Pooh
d) Piglet

True or False: Areas of the earth that have only two seasons usually have a wet season and a dry season.
a) True
b) False
c) Tigger
d) Eeyore

True or False: Man honors God by using his resources wisely.
a) True
b) False
c) Goofy
d) Max

True or False: Fires are never beneficial to an ecosystem.
a) True
b) False
c) Minnie
d) Mickey

Plants release water vapor into the air through ___.
a) respiration
b) condensation
c) evaporation
d) transpiration

The largest man-made stress is probably ___.
a) excessive hunting
b) habitat distruction
c) excessive fishing
d) pollution

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