Answer:
nuclear fusion
Explanation:
When the density and temperature at the core of the gravitationally collapsing nebula reaches values when nuclear fusion is triggered and sustained, that marks the birth of the star.
Nonpoint source pollution is a greater hazard, because scientists are not able to identify a single location the pollution came from. It is harder to find a solution if they are unable to find the source.
Hope this helps!
have a great day.
Folic acid is a necessary component of the diet of pregnant women in order to prevent neural tube defects.
Answer:
Skin = Epithelial tissue
Bark of tree = Cork
Bone = Connective tissue
Lining of kidney tubule = Simple cuboidal epithelium
Vascular bundle = Xylem and Phloem
