試題詳解

46 What is the main idea of the whole text?
(A) Satellite images of the ebb and flow of plant life show the earth breathing.
(B) Satellite images show that phytoplankton absorbs CO₂ from the atmosphere like other plants on earth.
(C) Satellite images will prove to us that plant life in the ocean causes rising CO₂ levels and global warming.
(D) Satellite images of plant life activities can help predict how plants will respond to rising CO₂ levels.