What two features of Earth protect us from some of the sun’s harmful radiation?

Suppose a scientist measures the amount of dna per cell of a particular diploid species at various stages of meiosis. she finds that the meiotic cells contain 3.7 pg , 7.3 pg , or 14.6 pg of dna. match each stage of the cell cycle to the corresponding amount of dna contained within a cell at that stage.

Indica el nombre y la fucion de los vasos sanguineos que entran y salen de los riñones

Explain light independent reactions