What organ, water is removed until the wast is solid?

Which are reasons cells undergo cell division?

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.

Why has two different alleles for the same trait?