Why did Mendel use cross-pollination in his experiments?
A) to speed up self-pollination
b) to control which plants pollinated other plants
c) to make sure dominant factors were always produced

When analyzing tree rings, what do scientists assume a thin ring indicates?

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?

Coral have a symbiotic relationship with what in order to eat?