What are the features for the Gulf of Aden?

The Gulf of Aden has levels of biological productivity that are amongst the highest in the world. The flow of nutrient rich water from the Gulf of Aden into the Red Sea (replacing loss through evaporation) is largely responsible for higher productivity in the southern part of the Red Sea as well.

Explanation:

its on google but there u go

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.