Aquatic Ecosystems and Population Dynamics

Discuss the characteristics of a population that has a high density but a low number of individuals.

• The population is spread over a large area.

• The population is concentrated in a small area.

• The population has a high birth rate.

• The population has a high death rate.

How do ocean currents affect the distribution of aquatic organisms?

• They increase the salinity of the water.

• They transport nutrients and organisms across different regions.

• They decrease the temperature of the water.

• They create barriers that prevent organism movement.

Tags

NGSS.MS-ESS2-6

NGSS.MS-LS2-4

Explain how light availability affects the distribution of life in aquatic systems.

• Light is not a significant factor in aquatic systems.

• More light leads to more photosynthesis, supporting more life.

• Less light increases the temperature, supporting more life.

• Light availability only affects terrestrial ecosystems.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Describe how seasonal variations can lead to changes in an ecosystem.

• Seasonal variations have no impact on ecosystems.

• They cause ecosystems to remain static.

• They can lead to changes in species behavior and population dynamics.

• They only affect the temperature of the ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Analyze how immigration affects population size.

• Immigration decreases population size.

• Immigration has no effect on population size.

• Immigration increases population size.

• Immigration only affects population density.

Tags

NGSS.MS-LS2-4

Discuss the age structure of a population that is likely to grow rapidly.

• The population has a large number of older individuals.

• The population has a balanced age structure.

• The population has a large number of young individuals.

• The population has a declining birth rate.

How do tides influence the abundance of aquatic organisms in coastal areas?

• Tides have no influence on aquatic organisms.

• Tides help in the mixing of nutrients, supporting more life.

• Tides decrease the salinity of the water.

• Tides increase the temperature of the water.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Explain the role of salinity in the distribution of life in aquatic systems.

• High salinity supports all types of aquatic life.

• Low salinity supports more diverse life forms.

• Different organisms are adapted to specific salinity levels.

• Salinity has no effect on aquatic life distribution.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Describe how climate change can lead to changes in ecosystems.

• Climate change has no impact on ecosystems.

• It can lead to shifts in species distribution and ecosystem structure.

• It only affects the temperature of ecosystems.

• It causes ecosystems to become more stable.

Tags

NGSS.HS-ESS3-5

NGSS.HS-LS2-6

NGSS.HS-LS4-5

Analyze how emigration affects population size.

• Emigration increases population size.

• Emigration has no effect on population size.

• Emigration decreases population size.

• Emigration only affects population density.

Tags

NGSS.MS-LS2-4