Hello pls help its my last question! Ill give brainiest Variation in DNA is the direct result of which of the following? *

1.Asexual Reproduction
2.Crossing Over
3.Interphase
4.Somatic Cells

Which group of chordates does  notpossess true backbones?                 a.  birds      b.  frogs and toads      c.  lampreys      d.  crocodilians

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water