What evidence do scientists have that earth has been hit by large objects, like asteroids, in the past? check all that
apply.
layer of volcanic ash
layer of burned organic matter
change in average global temperature
mass extinctions
earthquake activity
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Layer of burned organic matter , change in average global temperature , mass extinctions , earthquake activity are the right answers

Explanation:

According to research done by scientists, the Earth is about 4 billion years ago. Around this time, the entire solar system was born. According to scientists, the Earth is formed by a combination of gas and dust rotating around the Sun by a gravitational force.

Earth has a central core, rocky metal and a solid crust. There are only four main layers of the earth; Crust, mantle, earth’s outer core and earth’s inner core. The Earth is located approximately 150 million kilometers from the Sun.  

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

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