Question

a student has made a plan for research. read the plan and complete the task that follows.
research report plan
topic: craters in siberia
audience: science teacher and students
purpose: to inform
research question: how are the craters that have mysteriously appeared in siberia connected to climate change?
the student has found the following article about the siberian craters. click two pieces of evidence from the text that directly address the research question.
source: science article
in 2014, giant craters were discovered in the uppermost reaches of siberia in a place called the yamal peninsula. scientists were puzzled. what caused these giant holes to appear? as time goes by, more and more of these craters appear on the yamal peninsula and the surrounding area. from studying the phenomena, scientists have made preliminary determinations of the cause. as a result of increased temperatures created by global warming, the permafrost melts, releasing the methane gas that was trapped in the ice and soil; in turn, the gas explodes, creating a giant hole in the earth. in addition, the methane is released into the atmosphere, further contributing to global warming.

Explanation:

To answer the research question "How are the craters that have mysteriously appeared in Siberia connected to climate change?", we analyze the text:

1. First Evidence: "As a result of increased temperatures created by global warming, the permafrost melts, releasing the methane gas that was trapped in the ice and soil; in turn, the gas explodes, creating a giant hole in the earth." This shows global warming (climate change) causes permafrost melt, leading to crater - forming methane explosions.

1. Second Evidence: "the methane is released into the atmosphere, further contributing to global warming." This demonstrates the craters (via methane release) feed back into climate change, creating a connection.

Answer:

1. As a result of increased temperatures created by global warming, the permafrost melts, releasing the methane gas that was trapped in the ice and soil; in turn, the gas explodes, creating a giant hole in the earth.
2. the methane is released into the atmosphere, further contributing to global warming.