12. identify the sex cell shown at a.
13. identify the sex cell shown at b.

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis

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.