1. Which scientist's ideas eventually lead to the theory that Earth is several billion years old? A. Charles Lyell
B. Alfred Russel Wallace
C. Georges Cuvier O
D. Jean Baptiste Lamarck​

Which of these organisms have the greatest amount of cell specialized

Are the earth's ocean floor and continents the same age geologically? why or why not?

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.