What happens when a person who is allergic to ragweed encounters ragweed?

What in scientific term why the salty popcorn causes this thirst

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna. b) they study alleles that contain genes, which are chromosomes. c) they study chromosomes that contain genes, which are dna segments.

What is the most abundant vertebrate on earth?