ESS 3.1

Which groundwater contaminant contained in fertilizers and pesticides comes from farms?

• bacteria

• mercury

• nitrates

• sodium

Which would most affect the health of fish in a local pond?

• The daily release of hot water into the pond from a local factory.

• A storm temporarily stirring up water and sediments in the pond.

• The occasional erosion of sediments into the pond from a nearby field.

• A slight increase in the number of people who fish in the pond for food.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which is most likely to happen when river water temperature rises above 35°C?

• The water will become polluted.

• The dissolved oxygen levels will increase.

• There will be negative health effects on wildlife.

• There will be decreased evaporation from the river.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5

A recreational lake experiences eutrophication because of excess nutrients. Based on this information, how would the recreational lake most likely appear?

• clear and blue

• oily and greasy

• murky and full of algae

• orange and rust-colored

Which is a bioindicator?

• current

• insect

• rock

• water

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Why do biologists use indicator species?

• to compare freshwater and ocean ecosystems

• to count the number of organisms present

• to monitor water quality and biodiversity

• to analyze the dominant species

Tags

NGSS.MS-LS2-5

Which process would most likely increase the dissolved oxygen level in a freshwater lake?

• algal bloom

• lake turnover

• photosynthesis

• respiration

Tags

NGSS.MS-LS1-6

Which would most likely cause a sudden increase of nitrates in a waterway?

• spill from an oil tanker

• runoff from a boat yard

• runoff from a golf course

• discharge from a chemical plant

Which is the best example of a point source pollution?

• runoff from fields

• pesticides sprayed into the air

• oil spill from a boat on the Atlantic Ocean

• smoke from multiple industries in a large city

Which best describes the relationship between temperature and dissolved oxygen in a lake?

• As temperature increases, dissolved oxygen increases.

• As temperature increases, dissolved oxygen decreases.

• As temperature decreases, dissolved oxygen decreases.

• A change in temperature has no effect on dissolved oxygen.