What does Porifera (sponges) share with all other animals (i. e., what are the synapomorphies of Animalia)

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

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?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from