Ocean Acidification

Marine organisms make their shells from calcium and

• chloride

• carbonate

• seawater

What does the orange line show?

• CO2 in the water

• Air temperature

• Carbon emissions

• pH of the water

What happened to the pCO2 between 1989 and 2014?

• it increased by 50

• it decreased by 50

• it increased by 100

• it decreased by 150

Tags

NGSS.HS-ESS3-5

As the pH decreases, what happens to the pCO2?

• it increases

• it decreased

• it stays consistent

• it disappears

Tags

NGSS.HS-PS1-5

As the pH decreases, what happens to the ocean?

• It becomes more acidic.

• It becomes more basic.

Tags

NGSS.MS-PS1-2

What was the pH around 1989?

• about 8.1

• about 7.5

• about 8.5

• about 8.9

What was the pCO2 around 1994?

• about 300

• about 350

• about 325

• about 375

Tags

NGSS.HS-ESS2-6

Ocean acidification is

• the ongoing decrease in the pH value of the Earth's oceans

• a change in the properties of ocean water that can be harmful for plants and animals

• All of the above

Tags

NGSS.HS-ESS2-2

NGSS.HS-LS2-5

NGSS.HS-LS2-6

The increasing of carbonic acid (H2C03) is detrimental to

• shells

• oysters

• corals

• all of the above

Tags

NGSS.HS-LS2-7

Carbon dioxide reacts with seawater and carbonate to form bicarbonate. This reduces the amount of carbonate available in the seawater which oysters use to build their ____________

• shells

• and skeletons

• all

Tags

NGSS.HS-ESS2-6