The earth is often called the ocean planet. Its surface is 70 percent ________. ( )
A. |
land |
B. |
plants |
C. |
animals |
D. |
water |
The earth is often called the ocean planet. Its surface is 70 percent ________. ( )
A. |
land |
B. |
plants |
C. |
animals |
D. |
water |