Well, to answer your first question, Because there are places on Earth that are both biologically rich — and deeply threatened. For our own sake, we must work to protect them. and for your 2nd question, 3 characteristics of magnetic reversal are: field, bar magnet, and molten material. Hope this helps
Answer:
DNA tightly coils around proteins and condenses into chromosomes, which fit in the nucleus.
Explanation:
Placenta
It also does not allow the maternal and fetal bloodstreams to mix
A.) Multicellular <span>organisms are made up of many different groups of specialized cells
Hope this helps!</span>
