A. World Population doubles: 20th century
B. Last Drop in Human Population rates: Black Death Pandemic
C. Industrial Revolution: 19th century
D. ??????
Confusing question - reword!
Pangea is the supercontinent Alfred Wagner proposed in his theory
The Great Lakes were formed during the last ice age.
Explanation:
Hi there!
Given;
one angle (let be x)= 141°
Then;
141° + angle 3 = 180°. {being linear pair}
angle 3 = 180°-141°
angle 3 = 39°
Therefore, angle 3 is 39°.
Now; angle 3 = angle 4 = 39° {alternate angles are equal}
Therefore, the measure of angle 4 is 39°.
<u>Hope</u><u> it</u><u> helps</u><u>!</u>