ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A colony of ants
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The grass and ducks and fish at a pond
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The grass and ducks and fish and rocks and water in a pond
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An ant
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Detailed explanation-1: -definition of a pond. Ecologists usually describe a pond as a quiet body of water shallow enough that plants often grow all the way across it. A lake is usually larger and deeper than a pond. The definition is not precise, and what some people call a pond, others may call a lake, a wetland, or a marsh.
Detailed explanation-2: -A pond ecosystem is a community of organisms that live in a pond. It is a freshwater ecosystem in which the various organisms rely on one another. The biotic factors of the pond ecosystem are classified into three categories. They are known as producers, consumers, and decomposers.
Detailed explanation-3: -A pond or lake ecosystem includes biotic (living) plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions. Pond and lake ecosystems are a prime example of lentic ecosystems. Lentic refers to stationary or relatively still water, from the Latin lentus, which means sluggish.
Detailed explanation-4: -Non-living factors, also called abiotic factors, include sun-light, nutrients, dissolved oxygen, temperature, pH, color, and turbidity (i.e., water clarity). These factors, when taken together, not only distinguish one pond from another, but also directly impact the productivity of a pond.