Ecology - Succession, Aquatic Ecosystems, Pop. Dynamics

Which is NOT a freshwater ecosystem?

• a river
• a lake 
• an estuary
• a stream

A wetland that contains a mixture of fresh water and salt water is called

• an estuary
• a stream
• a river
• a pond

Tags

NGSS.MS-LS2-3

The photic zone

• extends to the bottom of the open ocean
• extends to a depth of about 200 meters
• is deep, cold, and permanently dark
• is where chemosynthetic bacteria are the producers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The aphotic zone is

• the ocean's dark lower layer where photosynthesis cannot occur
• the sunlit upper layer of the ocean where photosynthesis occurs
• on the bottom of lakes, streams, and oceans.
• where benthos are found

Tags

NGSS.MS-LS2-3

Estuary water should have 

• less salt than the ocean
• more salt than the ocean
• no salt

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-4

Which of the following will increase the size of a population?

• emigration and births
• immigration and deaths
• immigration and births
• emigration and deaths

Tags

NGSS.HS-LS2-2

NGSS.HS-LS4-2

NGSS.HS-LS4-5

Which of the following is a density-dependent limiting factor?

• human activities 
• unusual weather
• competition
• natural disaster

Tags

NGSS.HS-LS4-2

NGSS.HS-LS2-6

Which of the following statements about primary succession is true?

• It begins with a climax community
• Small mammals are the first to live there
• It begins with bare rock
• It begins with rock and soil

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-ESS2-2

What type of growth is shown on this graph?

• logistic
• exponential
• average
• density-independent

Tags

NGSS.HS-LS2-1

Which of the following is a density-independent limiting factor?

• natural disaster
• predation
• disease
• parasitism