2019 Grade 8 Intermediate-Level Science Test Questions 11-20 Question Preview (ID: 59894)

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At the end of the 10-year period, which color of rabbit appears to be best adapted to its environment?

a) white

b) tan

c) gray

d) black

Variations in traits, such as the fur color of rabbits, may be caused by

a) sexual reproduction

b) a decrease in air pollution

c) dynamic equilibrium

d) adequate resources

This change in plant types over time is an example of

a) ecological succession

b) urban growth

c) selective breeding

d) genetic engineering

This diagram shows that, in frogs,

a) methods of sexual reproduction depend on the species

b) metabolism is the sum of all chemical reactions

c) body structures change during development

d) offspring always look like the adult

Which organisms in this food web decompose materials and recycle wastes?

a) green plants

b) mice

c) bacteria

d) foxes

All of the plants and animals living in the same area make up a

a) population

b) community

c) species

d) habitat

Which change would most likely cause a decrease in the number of squirrels living in an area?

a) a decrease in the number of predators

b) a decrease in competition between the squirrels

c) an increase in available food

d) an increase in the number of forest fires

The catalytic converter most likely was developed in response to

a) the demand for more energy-efficient cars

b) the demand for increased car engine power

c) a need for lower-priced cars

d) a need for lower-priced cars

The formation of rock fragments and soil is most likely the result of

a) weathering

b) gravity

c) convection cells

d) hazardous weather

All matter is made up of

a) cells

b) atoms

c) molecules

d) compounds

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