Mutations (changes in DNA) are caused by a variety of factors
including UV radiation from the sun and
environmental toxins.
I​

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)

When ash and dust begin to settle on the ground, they eventually become compacted by

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil