Melanin is a protein pigment that protects us from ultraviolet radiation. What level of structural organization is the classification of melanin?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f