Answer:
4
Explanation:
Mitochondria produce the energy required to perform processes such as cell division, growth, and cell death. This in itself shows that the nucleus plays an important part in cell division and in directing the development of the fertilized egg into an embryo. The nucleus is, of course, required for cell division, but it also determines the type of structure which the cell eventually develops into.
It means that you should be grateful for what you have now - It is better than having 'nothing.'
Allusion, an expression designed to call something to mind without mentioning it explicitly; an indirect or passing reference.
Cannot answer the second one hince i do not have the correct info.
When people multitask, they are prone to committing more mistakes.
Hope that helps :)