Environmental Changes — Unit test Answers
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Which statement describes abiotic factors in an environment?
A
Chickens run around a farm.B
Soil retains water and nutrients.C
Bacteria use energy to reproduce.D
Plants compete for sunlight in an ecosystem.2
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Which phrase describes a population?
A
a group of different communities in an areaB
organisms of the same species living in an areaC
nonliving things that interact with living things in a regionD
organisms that belong to the same community within a region3
Which example is a long-term environmental change?
A
La NiñaB
El NiñoC
climate changeD
small asteroid impact4
Which are abiotic factors as well as basic needs that living things compete for?
A
bacteria and waterB
fungi and bacteriaC
pollen and sunlightD
sunlight and water5
Which example is a short-term environmental change?
A
ice ageB
tsunamiC
global warmingD
large asteroid impact6
Which organisms release carbon dioxide as waste?
A
consumers onlyB
consumers and decomposersC
producers and decomposersD
producers only7
Which best explains how scientists confirmed that the moon formed around the same time as Earth?
A
Scientists determined the approximate age of fossils from the moon and Earth.B
Scientists used radioactive dating to study the age of material from the moon and Earth.C
Scientists explored the cycle of condensation and evaporation over time on the moon and Earth.D
Scientists analyzed the content of gases that were part of the atmospheres on the moon and Earth.8
Which period belongs to the Paleozoic era and not the Cenozoic era?
A
DevonianB
NeogeneC
PaleogeneD
Quaternary
10
Which best explains why a thick tropical forest filled with large plants typically has a lot of water vapor in the air?
A
The plants undergo transpiration.B
The plants undergo condensation.C
The plants prevent water from evaporating.D
The plants prevent water from becoming runoff.Did you find these answers helpful?
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