Aquatic Ecosystems & Abiotic Factors

What percentage of total surface water on Earth is freshwater?

• 97%

• 53%

• 3%

• 1%

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which type of freshwater ecosystem typically has the most dissolved oxygen?

• river

• lake

• wetland

• pond

Which type of aquatic ecosystem purifies water by filtering pollutants and prevents flooding?

• river

• lake

• pond

• wetland

Over 90% of the world's oceans are considered which ocean zone?

• intertidal zone

• open ocean zone

• coastal zone

Tags

NGSS.MS-ESS2-4

What is the name of the ecosystem where freshwater meets saltwater?

• estuary

• wetland

• river mouth

• bog

Which of the following is NOT an abiotic factor?

• pH

• dissolved oxygen

• sunlight

• coral reef

How does oxygen enter aquatic ecosystems?

• photosynthesis and benthos

• photosynthesis and chemosynthesis

• photosynthesis and diffusion

• photosynthesis and sunlight

What is the pH of pure water?

• 8.4

• 7.0

• 7.5

• 6.0

What does rain water react with to create acid rain?

• air pollution

• fertilizer

• rocks

• sunlight

Tags

NGSS.MS-PS1-2

Excess carbon dioxide in the ocean can cause what?

• ocean acidification

• strong shells and corals

• acid rain

• increased pH

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3