What could Carl Linnaeus no have used as a method of classification in his taxonomy system ? A. DNA
B. the habitats of organisms
C. structure of organisms
D. apperance of organisms

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?