Earth can be considered as a closed system, since it only receives sunlight (energy), while the overall mass stays constant, without (almost) any exchange from space. Another example of a closed system is a saucepan or frying pan, on a stove, when its lid is closed.
The correct spelling answer is a
The correct answer is: B) it placed taxes on purchase of all goods
Ancient Greece did not have a system for direct taxation, therefore, it cannot place tax over the purchase of all goods. At the time, tax was only collected from the wealthiest Greeks during times of need (usually war).
Answer:
1. It helps you meet new people.
2. It opens up your mind to discover new idea's.
3. If you don't go through change then you'll be stuck in an infinite loop.
Your welcome! <3
