Rachel's parents used to pay her an allowance every week to feed the cats and to do a few other chores around the house. However, once her mother lost her job, her parents stopped giving her an allowance. Although rachel quit making her bed every morning, she continued to feed the cats. Which of the following best explains why rachel continues to feed the cats?.

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.