How many of the five terrestrial worlds are considered geologically dead?

Dna is always read in the whereas rna is read in .

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.