In studying fossils at a particular location, biologists found an insect in a layer of shale, a flower in a layer of sandstone, a fish in a layer of limestone, a reptile in a layer of shale, and a bird in a layer of limestone. The insect probably lived at the same time as the:.
1) fish.
2) bird.
3) flower.
4) reptile.

4) reptile.

Explanation:

Such type of the trace of living things that were existed in past or preserved remains of the living organisms are called fossils. Generally bones, exoskeleton and some other parts are found during the geographical study. These fossils are used for various experimental purposes such as in the study of the evolution of the organisms and some other. Shale is made up of weathering rock and is present in thin layers and contains different types of fossils record of the organisms for many years. Fossils of reptiles and insects were found at the same time.

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