Question

1 - climate change
learning objective: identify scientific observations that support the idea of climate change.
which of the following is a scientific observation that supports the idea of a warming planet?
a.) there have only been warmer periods throughout earth’s history.
b.) earth has been warming up slower than any other historical global temperature increase.
c.) earths climate depends on the amount of plant and animal life.
d.) earth has been warming up faster than any other historical global temperature increase.

Explanation:

Earth's current warming rate is unprecedented compared to historical temperature - increase events, which is a scientific observation supporting a warming planet. Option a is incorrect as Earth has had both warm and cold periods in its history. Option b is the opposite of what is observed. Option c is a general statement about climate and life but not a direct observation of warming.

Answer:

d. Earth has been warming up faster than any other historical global temperature increase.