It exists above mesosphere and below exosphere, absorbs much of the solar radiation, auroras occur here and is often considered as the outer space. This is
A) troposphere
B stratosphere
C) mesosphere
D) thermosphere

The use of dna as evidence in criminal investigations became possible because of the

Drag each tile to the correct box. arrange the phases of mitosis in the correct order. 1 (condensation of chromosomes) 2 (separation of chromosomes) 3 (formation of spindle fibers) 4 (alignment of chromosomes in the center of the cell) 5 (pinching of the cell membrane)

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -