Which of the following statements is true?
a.
the earth has evolved over time.
b.
the earth's continents have not changed over time, but some islands have formed.
c.
the earth is exactly the same as it was millions of years ago.
d.
the earth's surface has not changed over time.

explanation:

the president, prime minister, chief justice, speakers and ministers take their oath of office. the oath is taken in bengali

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.

the graph is a circle graph because it demonstrates different components of the graph in the form of a circle . pls mark brainliest!