Diseased animal cells may produce molecules that activate death cascades to kill the cells in a controlled manner. Why would neighboring healthy cells also die?

7. describe two strategies that parents can use to cope with stress. 8. describe the three types of childcare available to families. 9. what can parents do to be more involved in their children's education at home and at school? 10. which factors should a parent consider when choosing a childcare option?

If animal agriculture was eliminated, how much grain would become available for human consumption?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.