Carbon dioxide levels in the air have changed throughout earth's history.  The difference today is how ______ the change is happening.

• rapidly 
• slowly 
• wide spread

Tags

NGSS.MS-ESS3-5

Why are corals found in shallow water?

• to get more interaction with the nitrogen cycle

• zooxanthellae need light to photosynthesize

• to get more interaction with the carbon cycle

• to be protected from deep sea predators

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

How do coral obtain their food?

• Catch with their tentacles

• Are fed by zooxanthellae

• Make their own food by photosynthesis

• Both catch food and are fed by zooxanthellae

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The relationship between coral and zooxanthellae is described as

• mutualism

• parasitism

• commensalism

• all of these are correct

Tags

NGSS.MS-LS2-2

Coral larvae (planulae) become a __________.

• polyp

• hard coral

• soft coral

• reef

What is coral bleaching?

• When the sun heats up the water and the coral cannot withstand the high temperatures

• When people throw bleach into the ocean

• When a type of fish eats away at the coral, making it looked bleached.

• When the coral naturally dies,

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Ocean acidification begins with 

• pollution from ships

• carbon dioxide released from combustion (burning fossil fuels)

• dumping of waste from cities into the ocean

Tags

NGSS.HS-ESS2-6

Carbon dioxide and seawater combine to form

• calcium carbonate
• carbon monoxide
• carbonic acid 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What happens to 1/4 of the greenhouse gases in the atmosphere?

• It is released into space.

• It gets absorbed by the ocean.

What happens to water when carbon dioxide is dissolved in it?

• it becomes more acidic

• it becomes more basic

• it becomes healthier to drink

• it turns into coal