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S8: Section 3.1- Diversity in Fresh and Salt Water

Last updated over 3 years ago
8 questions
20

LAKE DIVERSITY: Lakes are freshwater bodies in low areas of land. Like the ocean, lakes have layers or zones. Some organisms live only in one or two zones. Others live in all three. Lakes are much more affected by the local climate than the ocean is. In northern countries such as Canada, some lakes freeze over in winter. The organisms that live in them must be able to cope with extremely cold temperatures in winter and warm temperatures in summer. Using information discussed yesterday and your text, create an illustration that shows the "THREE ZONES" of a lake and includes a detailed description to support your drawing. This is not an art project but you do need to put some effort into the illustration.

20

OCEAN DIVERSITY: The ocean is similar to a huge lake because it has a shoreline, shallow areas, and deep areas. But in the oceans, there are greater differences in water motion, salinity, and depth than in a lake. The deepest part of the ocean is about 11 000 m. The deepest lake in the world is Lake Baikal in Russia at about 1700 m. Using information discussed yesterday and your text, create an illustration that shows the "FOUR ZONES" of an Ocean and includes a detailed description to support your drawing. This is not an art project but you do need to put some effort into the illustration.



1

Diversity occurs within many different ecosystems around the world. The ecosystem that is the most diverse is the ...

1

An ecosystem is any place where living organisms interact with other living organisms and non-living things. This many, of all the major types of organisms, live in saltwater environments for some time in their lives ...

1

Another important zone in the ocean ecosystem is the one that enables many of the species that
live there to live part of their lives out of the water. This zone is the shoreline. It is called the ...

6

Why is the diversity of living things in salt water greater than in fresh water?

6

Describe three characteristics that enable fish to live in aquatic environments.

20

What are the environmental factors that lead to the development of adaptations by species? Describe each one for full marks.