Answer:
Viral diseases cannot completely be healed while bacterial diseases can completely be healed.
They weaken body cells.
Explanation:
When we get a disease, the white blood cells try to fight it but when the disease is too strong and our immunity is low signs and symptoms show then when you take the medicine a persons immunity will be back and be able to fight the disease.
Answer:
The oceanic crust is formed by partial melting of the mantle at mid-ocean ridges. The continental crust is formed even more cycles of partial melting over time, resulting less dense rocks.
Explanation:
The mantle, oceanic crust, and continental crust all have different compositions due to a process called partial melting.
This is where you start to melt a rock, but don´t melt it all the way.
When you partially melt a rock, certain chemical elements tend to stay in the solid rock while others tend to go into the melted part.
As a result, the rock that forms from that melt is less dense than the original rock.
If you then partially melt that rock, you get a rock that is even lighter.
The answer is <span>To become specialized, cells need to control the production of proteins coded for in their DNA.
All genetic information in a cell's DNA is not fully expressed at all times. On the contrary, in different cell lines, different DNA segments are expressed at different times. Some genes are active in unspecialized cells and later deactivate, some are activated only in specialized cells, for example. These are facultative genes which are active when needed, unlike constitutive genes which are expressed continually. Therefore, <u>t</u></span><span><u>o become specialized, cells need to control the production of proteins coded for in their DNA. </u>DNA segments, however, remain in cell and are not destroyed. Also, during the mitosis, all genes are passed, not only required genes.</span>
