35.5 degrees.
Explanation:
ACB = 1/5 of AOB
Plug in 61 degrees for AOB.
1/2 of 61 = 35.5.
If not correct, then you may correct me.
The fact that volcanic rock has often been found early in the rock record but less frequently in later rock layers suggest to scientists the following conclusion about early earth: <span>volcanic activity was more common in the past than it is today.
</span>Besides volcanic activity in general, also huge volcanic eruptions<span> were much </span>more common than today<span>.</span>
The first step in the formation of a hotspot volcano is lava erupts and forms an island. Magma<span> generated by the </span>hot spot<span> rises through the rigid plates of the </span>lithosphere<span> and produces active volcanoes at the Earth's surface.</span>
Gold is plentiful in Africa and is a necessity for most technological devices.
I believe it's B, hope this helped
