4. NC 8th Grade Science EOG Review

Which statement supports the theory of evolution?

• All living cells come from previous cells.
• All plants and animals have DNA.
• Matter cannot be created or destroyed during chemical reactions.
• Fossils provide evidence that vertebrates share a common ancestor.

Which example BEST represents an interconnection between an aquatic food web and a terrestrial food web?

• Fish eat insects that land on the surface of a pond.
• Snakes eat bird eggs.
• Bats eat mosquitos.
• Mountain lions catch and eat deer.

What is one way the government of the United States attempts to reduce pollution in the oceans?

• create new desalination plants
• discontinue sewage treatment programs
• increase oil and gasoline production
• enforce laws limiting trash dumping

Where is the majority of Earth's freshwater located?

• clouds
• Pacific Ocean
• polar ice caps
• rivers

The population density of marine life is denser along the shorelines of the ocean than farther out in the deep waters of the ocean.  Which statement provides the BEST reason for this situation?

• Ocean currents prevent many smaller marine organisms from living in deep water.
• The shallow waters have fewer predators.
• Coastal waters are less polluted than the deeper waters of the ocean.
• There are more nutrients in shallow waters.

Which is an example of a physical change?

• boiling
• burning
• rotting
• rusting

A scientist has a hypothesis that a large volcanic eruption caused a change in global temperature. Which information gained from ice cores is MOST useful in supporting the scientist's hypothesis?

• levels of dissolved oxygen
• identities of trace metals
• estimates of natural radioactivity
• amounts of atmospheric dust

Which project is MOST LIKELY to interest a scientist working at a biotechnology company?

• study and reconstruction of fossilized bones
• conservation of key species within ecosystems
• development of genetically modified corn plants
• prevention of sewage leaking into water supplies

Which source of water pollution includes oil and gasoline discharge from automobiles and storm sewer discharge?

• agriculture
• bacteria
• sedimentation
• urban runoff

Which BEST describes a bio-indicator?

• a species that has a short life span
• a species that depends on specific conditions to survive
• a species that can adapt to a variety of conditions
• a species that has been introduced to an ecosystem