Ocean Threats

Where is algae not found?

• the ocean

• swimming pool

• hot water springs

• freshwater streams

_________ is a microscopic form of algae.

• kelp

• algae bloom

• phytoplankton

• photosynthesis

How is algae important for the ecology of our planet?

• Producers in the food web

• Helps make carbon dioxide

• It filters the water to make it clean

• Makes the ocean cooler

How long can "super blooms" last for?

What helps trigger an algal bloom?

Volcanoes erupting can lower the level of carbon dioxide in the atmosphere.

• true

• false

One of the human causes for an increase in CO2 levels in the atmosphere is caused by burning:

A rise in CO2 will lead to an increase in what natural disaster?

• volcano eruptions

• avalanches

• lightning storms

• flooding

An extreme algal bloom that creates an area where no life exits is called:

• lifeless zone

• dead zone

• death area

• expired area

A balanced ecosystem can cope with minor changes to the environment.

• true

• false