ECOSYSTEMS (II)

A physical environment can be...

• terrestrial or aquatic.

• only terrestrial

• only aquatic

In terrestrial environments the most important factors are ...

• ... salinity, light, the water current,the temperature and the type of seabed or rivered.

• ...climate, soil conditions and the terrain.

The type of climate depends on various factors: temperature, humidity and the seasons.

• TRUE

• FALSE

In aquatic environments the most important factors are ...

• ...salinity, light, the water current,the temperature and the type of seabed or rivered.

• ... climate, soil conditions and the terrain.

Freshwater ecosystems contain low levels of salt.

• TRUE

• FALSE

Marine ecosystems contain low levels of salt.

• TRUE

• FALSE

The light in marine water is important, because algae need light to grow.

• TRUE

• FALSE

The physical environment affects the type of vegetation found in an ecosystem.

• TRUE

• FALSE

An ecosystem can be made up...

• ... of grasslands and desert.

• ...of forest and grasslands.

• ...of forest, grasslands or desert.

• ...of forest or desert.

Living things can modify the environment.

• TRUE

• FALSE