Earth is a/an
Open system
Closed system
Both $(a)$ and $(b)$
None of these
Earth is an open system for energy and closed system for matter.
Amount of inorganic substances present in an ecosystem is ______. Energy flow is a ______ feature of ecosystem.
Which of the following is an example of man-made ecosystem?
Mangroves are
If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face problem of
Given below is a figure of an ecosystem. Answer the following questions.
$(i)$ What type of ecosystem is shown in the figure.
$(ii)$ Name any plant that is characteristic of such ecosystem.
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