No, the biosphere does not exhibit a clear boundary as life always comes to an end.
The biosphere comprises all the living things of the world, like all the plants and animals. It is considered as the global ecosystem, that is, the gathering of all the planet's ecosystems. It comprises the land and the atmosphere. It is usually considered as the zone of life, where all the species of the planet thrives.
Can you restate the questions again ?
Answer:
controlled by the Arabs, who brought frankincense and myrrh by camel caravan from South Arabia.
Magnalium: Magnesium and Aluminum
Bronze: Copper, Tin, Arsenic, Phosphorus, Aluminum, Manganese and Silicon (whichever you learned in class from those)
1. True
2. True
3. False
4. True
