0ne of these has a single layered envelope- (i) chloroplasts (iii) nucleus bodies (ii)mitochondria (iv)Golgi
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An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. Biotic factors include plants, animals, and other organisms
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