All vertebrate embryos have a notochord, or a long rod that runs through the body just below the nerve cord. As the embryo develops, only jawless fish retain the notochord. What does this indicate about the evolution of vertebrates?

Which statement best illustrates vibrational motion?

Are carbon dioxide, oxygen, and hydrogen the molecules needed to do all the three steps of cellular respiration?

Which two landforms are caused by convergent boundaries

Is the creation of genetically unique offspring by two parents?

3. What are two major phases of cell division? 4. Describe the steps in Phase 1. 5. Describe the steps in Phase 2. 6. What is it called when elements cross the cell membrane performs a high concentration to low? 7. List all passive transport. 8.

What is the pulmonary circuit

1. Explain how P - and S-waves are different.

What is the purpose of engineering the citrus tristeza virus?

Researchers use experiments rather than other research methods in order to distinguish between

4. Shows each line represented as a pair of shared electrons but is not truly three-dimensional: 5. Shows three dimensions but no interior bonds: 6. Is used in kits and shows a general shape: