Complete the Words Practice Test 9: Thawing permafrost and climate change | TOEFL iBT | अंग्रेजी अभ्यास परीक्षा

Fill in the missing letters in the paragraph. Each underscore (_) stands for one missing letter. Type the complete word for each item.

Topic: Thawing permafrost and climate change0 / 10 answered

In the Arctic, large areas of ground stay frozen all year; this ground is called permafrost. It (1)cont____ huge (2)amo____ of (3)pl___ material (4)th__ died (5)thou_____ of (6)ye___ ago (7)b__ never (8)fu___ decayed (9)bec____ of (10)t__ cold. As temperatures rise, the permafrost begins to thaw, and microbes break down this material. This process releases carbon dioxide and methane, which trap more heat in the atmosphere and may speed up warming further.