I believe the answer is D. The NASA mission which sent a probe to collide with a comet's nucleus is the Deep Impact. It is the first mission sent in order to see the interior of a comet. The comet that was aimed was called the Comet Tempel 1.
Sea-level changes are termed eustatic if they are local changes. The correct answer is D.
<h3>What are sea level changes?</h3>
This has to do with how the level of the sea gets high or gets lower based on the land or the location.
When it is said to rise, it means there is an increase in the level of the ocean water.
Read more on sea level here: brainly.com/question/2092614
The corona is an envelope of ionized gases that extends out past the sun.
The corona is the third layer of the Sun. This layer takes the out most portion of the Sun's atmosphere. It is consisted of ionized gases that normally extend around one million kilometers from the Sun's surface.
