We can learn from the passage that ______ .A.there are now many farms under the sea produc
We can learn from the passage that ______ .
A.there are now many farms under the sea producing food
B.more than one tenth of the world's people are suffering from hunger
C.the supply of oil, gas and coal are increasing rapidly throughout the world
D.it is unnecessary for man to make full use of the riches of the sea