Please check my answers, I’m not entirely sure of these?

5.
Zooplankton are tiny plants in the ocean eaten by lots of other organisms to obtain oxygen.

True
x False

6.
Some Antarctic fish have antifreeze in their blood to keep it from freezing.

True
x False

7.
There are a lot of nutrients in the surface water near the Antarctic.

x True
False

8.
Polar bears live in the Antarctic.

True
x False

9.
Limpets spend their lives standing on their heads and eating with their feet.

x True
False

10.
Krill are eaten by other animals because they are rich in carbohydrates.

x True
False