food chain:The simplest representation of energy in a community. At the base is energy stored in plants, which are eaten by small organisms, which in turn are eaten by progressively larger organisms; the food chain is an oversimplification in that most animals do not eat only one type of organism.
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food web:the interconnected feeding relationships in an ecosystem. These relationships can be complex; some organisms may feed on more than one trophic level, or changes may occur depending on a species' life history stages or the availability of food.
Answer:
When Kelly drew the diagram, the area marked Y -which includes cast and print- involves mold filling minerals and sediment (option D).
Explanation:
A fossil is the evidence found of an organism that lived many years ago, and consists of organic remains - such as bones - or impressions that remained in the soil.
The fossil record of a living being occurs when it dies and its remains, which are buried, when decomposing leave an impression. This impression - as a mold - is subsequently occupied by minerals and sediment that describe the approximate form of the organism.
In the Kelly diagram, the <u>area labeled Y shows not only the impression of the organism that was found, but also the minerals and sediments that were responsible for filling said mold</u>.
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It helps with population and reproduction.
