(Higiena i choroby układu rozrodczego) w zeszycie wypisać wszystkie choroby tego układu, wpisując przy każdej z nich czynnik, który chorobę wywołuje

Name the glands associated with human digestive system

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels

Which of the following is a feature of all cells? o a. all cells have a nucleus. o b. all cells have dna for at least part of their life cycle. het . o c. all cells are spheres. o d. all cells have a rigid cell wall.