Which of the following is the best definition of a system? A. a collection that shares the same function
B. The form and arrangement of an object or material.
C. Anything that takes up space and has mass.
D A group of objects and materials that are interrelated.

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?

What would most likely happen if green plants were exposed to longer days of sunlight? a. the mitochondria would produce less energy . b. the chloroplasts would produce more energy. c. the cell wall would become thicker. d. the vacuoles would quickly shrink. b. the chloroplasts would produce more energy.

Aprocedure done under controlled conditions to test a hypothesis is an inquiry.