Question 2:

The________ is the largest known mammal found in oceans.

Question 3:

 ‘Grass’ is the most important plant in the _________ ecosystem.

Question 4:

 Only __________ plants such as tussock grasses, small-leafed shrubs, and dwarf trees grow in the Alpine ecosystem.

Question 5:

Plants contain__________, a green pigment necessary for photosynthesis.

Question 6:

__________ grow in areas that experience four clear seasons such as winter, spring, summer, and autumn.

Question 7:

______________are referred to as "jewels of Earth" and the "world's largest pharmacy."

Question 8:

The _______ is the only bird that can swim, but not fly. It is also the only bird that walks upright.

Question 9:

__________ is also known as coniferous forest or boreal forest. They are found in Canada, northern Asia, Siberia, Denmark, Norway, Sweden, and Finland.

Question 10:

The ________ is the lowest point on land.