Question

Scientists who study the rocks , minerals , landforms and the history of the earth can tell
what kind of plants and animals lived on the earth a long time ago. These scientists are
called geologists. One way that they are able to do this is by the study of fossils. Fossils
may be the actual remains of plants or animals, impressions of them in rock, or the track
of animals as they walked or crawled.
Most fossils are formed in the waters covering the continental shelves, in warm,
shallow, inland seas, and in large swamps that covered large parts of the land in post
geologic time. When the animals of these waters die, their remains are deposited on the
floor of the water body where the fleshy part of the animal decays. The skeletal portion
of the body is partially replaced by minerals and other sediments. If this takes place in
just the right manner, a fossil is formed. Since rock sediments are involved in the
formation of fossils, it is not surprising that one finds many fossils in sedimentary rock
layers. Plant fossils are found in the areas that where once swamps. There are four
principle kinds of fossils: original remains, replaced remains, moulds and casts, and
impressions.

a)How do dead animals contribute to the forming of minerals?
b) What are the four principle kinds of fossils?

Answer 1

Explanation:

1. When the animals of these waters die, their remains are deposited on the

floor of the water body where the fleshy part of the animal decays. The skeletal portion

of the body is partially replaced by minerals and other sediments. If this takes place in

just the right manner, a fossil is formed

B)There are four

There are fourprinciple kinds of fossils: original remains, replaced remains, moulds and casts, and

There are fourprinciple kinds of fossils: original remains, replaced remains, moulds and casts, andimpressions.