True
All somatic cells have same genes but the genes whose product is not needed are turned off. Some genes are expressed constitutively and some genes are turned off and on depending upon the requirement of proteins.
Answer:
commercialism
Explanation:
an association between two organisms in which one benefits and the other derives neither benefit nor harm.
The properties of the original elements are completely changed.
For example, in the compound called "iron(II) sulphide", it is composed of iron and sulphur, that are chemically combined together. The element iron is attracted to magnets. Meanwhile, iron(II) sulphide is not attracted to magnets.
Another example is where sulphur has a yellow colour, but iron(II) sulphide has a brownish colour. As we can see, even the physical properties (colours) are completely different.
Therefore, the properties of the original elements are completely changed when they're combined into compounds.
I think it'd be cell, tissue, organ, organ system, organism.
I hope this helps!