<span>Osteoporosis is most likely to be affected by : Phosporus cycle.
basically, our skeleton are the warehouse of two substance, calcium and phosporous. If our skeleton has insufficient amount of these two susbtance, it will weakened its composition and caused the osteoporosis</span>
<span>gradual movement of the continents across the earth's surface through time. and that explains draft because they were crossing/drafting across the ocean hope that helps</span>
Human sperm and eggs contain 23 chromosomes. Human zygotes contain 46<span> chromosomes. The type of cell division that produces gametes with half the normal chromosome number is called meiosis. It is used to produce cells for repair and asexual reproduction.</span>
One has cancer and the other doesnt
Direct observation is an observation you make first hand. It is something you see with your own eyes and observe yourself.
Hope this helps!