Discuss why you think there is or is not value in exploring and learning about to exoplanets that exist PLEASE HELP 25 POINTS

Scientist believe that earths core is around 6000°c where does this heat come from

What is the reason for the “scramble for africa”?

Which sequence of transformations on preimage ∆abc will not produce the image ∆a'b'c'? a. reflection across the line y = x b. rotation 180° clockwise about the origin followed by a reflection across the line y = -x c. reflection across the x-axis followed by a reflection across the y-axis d. reflection across the line y = -x followed by a rotation 180° counterclockwise about the origin e. reflection across the y-axis followed by a rotation 90° clockwise about the origin