The Skin is another example for a non-specific defense against disease. it acts as a barrier to microorganism entry. Describe how the skin protects itself after its surface is punctured.

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

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

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?