What could a human living now and a horse living thousands of years ago have in common?
A. They need the same amount of energy to survive.
B. They are made of some of the same matter.
ОО
C. They have the exact same DNA.
D. They both get their energy directly from the sun.

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.