Helping regulate levels of calcium and phosphate in the blood, opposing the action of parathyroid hormone. (sorry if I didn't help ;-;)
The "frustule" cell wall of diatoms. A dinoflagellate isn't constructed this way. The frustule is composed of two parts which are pretty much identical except for size -- one of the parts is slightly smaller than the other.
It would be (A) it is a deficiency of minerals in mammals
True because carbs are sugars
The best way to do a observation can be a microscope or by taking notes ,and by , taking pictures or, asking questions about the subject that you and the teacher or you, your teacher and the class is talking about .! Hope this helps ..