Answer:
I think that the answer is that plasmas are considered a physical change. Let me know if it helped or if it's correct
Answer:
Yes.
Explanation:
On 28 July 2010, through Resolution 64/292, the United Nations General Assembly explicitly recognized the human right to water and sanitation and acknowledged that clean drinking water and sanitation are essential to the realisation of all human rights.
Answer:
A.
Explanation:
DNA is replicated through reproduction to the offspring. Hope this helps :)
Answer:
The earth has different layers because as it formed, the lighter parts (like continental crust) floated to the surface, and the really heavy parts (like iron and nickel in the core) sank to the middle. It is just like when you mix oil and water: the oil will float to the surface because it is lighter (or less dense) than the water.
I think its D. formal-operational
