8.L Life Science Released test

What happens to a population and to competition when there is a reduction of

living space?

•   The population expands and competition intensifies.

         

            

              

•      Competition strengthens while the population contracts.

•   The population increases as competition decreases.

• Competition weakens and the population decreases.

Tags

8.L.3.1

Which of these is a producer in a marine ecosystem?

• fish

• gull

• algae

• worm

Tags

8.L.3.2

Why do doctors suggest people get a flu vaccine each year?

• Viruses replicate more rapidly over time.

• Viruses can mutate from year to year.

• Vaccines are absorbed by the body year after year.

• Vaccines get stronger over time.

Tags

8.L.1.1

Which of these careers would a student studying biotechnology most likely

pursue?

• electrical engineering

• astronomy

• agricultural research

• geology

Tags

8.L.2.1

Which best determines the number of wolves that can live in an area?

• the amount of snow in the area each year

• the number of birds that live in an area

• the number of trees in the area

• the amount of food available in the area

Tags

8.L.3.1

Kudzu vines grow by climbing and wrapping around trees. Trees covered by kudzu

can die because they are starved of sunlight. What type of relationship exists

between the trees and the kudzu growing on them?

• competition

• mutualism

• parasitism

• predator-prey

Tags

8.L.3.2

What do transitional fossils best support?

• the Theory of Biological Evolution

• the Law of Superposition

• the Theory of Geological Evolution

• the Theory of Continental Drift

Tags

8.L.4.1

Tigers and household cats are members of the same family; however, their sizes are vastly different. What is the cause of this difference?

• biochemical makeup

• behavioral makeup

• genetics

• habitat size

Tags

8.L.4.2

Why is a healthy diet important?

• It maintains a constant body temperature.

• It prevents damage to internal organs.

• It makes oxygen for all the cells in the body.

• It supplies the body’s needs for growth and energy.

Tags

8.L.5.2

Ten people became sick with the flu after attending a school dance. What is the

scenario that could best explain how the people got sick?

• contact with environmental sources

• contact with an infected animal

• contact with a contaminated object

• contact with an infected person

Tags

8.L.1.1