20 teeth
By the time the embryo is eight weeks old, there are ten buds on the upper and lower arches that will eventually become the primary dentition. These teeth will continue to form until they erupt in the mouth.
Answer:
High reproduction low predators to kill them
I would say 1,2,&4 because bones cant protect organs from bacteria or sunlight.
Answer:
Changes in climate, pollution (to air/water/soil), health issues (mental/physical), harm to animals/nature, etc.
hope this helps!
D. All of the above. Because every being is totally different, meaning it will depend on your genetics from your family. :) <span />
