A fen is a type of wetland that includes neutral or alkaline water. They often include brown mosses, grasses, and sedges. Common animals include frogs, snakes, dragonflies, and mosquitos. A fen is an example of a(n):
A. species.
B. ecosystem.
C. biosphere.
D. habitat

B. Ecosystem

Explanation:

An ecosystem consists of all the organisms and the physical environment with which they interact. A Fen has all sorts of animals and plants that interact with eachother, so it is an ecosystem. A fen consits of more than what is included in a Habitat(One organism) and less than what is in a biosphere(Everything)

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explanation:

you will need these

an outline of all three paragraphsan identification of the historical era that you are writing aboutan explanation of the term mass productiona description of two ways new technology affected industrya conclusion that shows how new technologies allowed industrialization to grow