Use the diagram below to answer the following question. Which of the following statements accurately describes the relative age of the fossils in these rock layers?
A) The yellow shell fossils are from 300 million years ago
B)The brown trilobite fossils are from 500 million years ago
C)The brown trilobite fossils are older than the yellow shell fossils
D)The yellow shell fossils are older than the brown trilobite fossils

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.