What causes coral bleaching?(1 point)

Question

Responses

High water temperatures boil coral polyps, causing them to turn white in color.
High water temperatures boil coral polyps, causing them to turn white in color.

Water acidity and high water temperatures make coral polyps more prone to infection, causing them to turn white in color.
Water acidity and high water temperatures make coral polyps more prone to infection, causing them to turn white in color.

High water temperatures and water acidity cause coral polyps to expel algae, causing them to turn white in color.
High water temperatures and water acidity cause coral polyps to expel algae, causing them to turn white in color.

Water acidity causes coral polyps to lose their photosynthetic abilities, causing them to turn white in color.

What causes ocean acidification?(1 point)
Responses

Acidic carbon dioxide dissolves in water, lowering the water’s pH.
Acidic carbon dioxide dissolves in water, lowering the water’s pH.

Acidic oxygen dissolves in water, raising the water’s pH.
Acidic oxygen dissolves in water, raising the water’s pH.

Acidic oxygen dissolves in water, lowering the water’s pH.
Acidic oxygen dissolves in water, lowering the water’s pH.

Acidic carbon dioxide dissolves in water, raising the water’s pH.

There is a history of global temperatures changing, but why is this change different?(1 point)
Responses

There are more species on the planet this time.
There are more species on the planet this time.

It is not different; this is a regular shift in temperature.
It is not different; this is a regular shift in temperature.

This shift in temperature is happening more quickly.
This shift in temperature is happening more quickly.

The Earth is getting cooler everywhere instead of warmer.
The Earth is getting cooler everywhere instead of warmer.

Which is the least likely reason that a seal needs ice cover?(1 point)
Responses

to consume prey
to consume prey

to protect itself from the sun
to protect itself from the sun

to reproduce
to reproduce

to get in and out of water

Coral bleaching affects(1 point)
Responses

the acidity of the water.
the acidity of the water.

the color of the water.
the color of the water.

the temperature of the water.
the temperature of the water.

the biodiversity of the water.

Answer 1

1. What causes coral bleaching?
   High water temperatures and water acidity cause coral polyps to expel algae, causing them to turn white in color.

2. What causes ocean acidification?
   Acidic carbon dioxide dissolves in water, lowering the water’s pH.

3. There is a history of global temperatures changing, but why is this change different?
   This shift in temperature is happening more quickly.

4. Which is the least likely reason that a seal needs ice cover?
   to protect itself from the sun

5. Coral bleaching affects
   the biodiversity of the water.