Q: teenagers do not like meat
A: Teenagers do not like meat

Q: - it is not at all probable that anybody would create a writing-system to be used by a people already possessing one. only the new nation,the israelites, had no writing system of their own.
A: - It is not at all probable that anybody would create a writing-system to be used by a people already possessing one. Only the new nation,the Israelites, had no writing system of their own.

Q: [...]and how much of each ingredient he is putting in is not clear. {...] the data he had to use are simply not good enough to convince everyone that he has simulated past temperatures.
A: [...]and how much of each ingredient he is putting in is not clear. {...] The data he had to use are simply not good enough to convince everyone that he has simulated past temperatures.

Q: waste from households covers the waste types domestic waste, bulky waste, and garden waste, which in turn are divided into individual fractions, e.g. paper and cardboard, bottles and glass, and food waste/other organic waste.
A:
Waste from households covers the waste types domestic waste, bulky waste, and garden waste, which in turn are divided into individual fractions, e.g. paper and cardboard, bottles and glass, and food waste/other organic waste.