1) A. Biological
2) D. Model
3) B. Cold
What property of the pigment chlorophyll makes it appear green? Chlorophyll absorbs all of the visible spectrum of light except green, which it reflects. This is what makes it appear green.
I think the correct answer from the choices listed above is option A. When crossing-over takes place, chromosomes exchange corresponding segments of DNA. Corresponding genes on non-sister chromatids are exchanged at chiasmata. Hope this answers the question.
A warning sign. cross road ahead. Slow down look carefully in all directions
Retina transmits images to the optic nerve