I need science help. Por Favor.?

Question

A geologist finds a fossil in a rock layer. The fossil has been dated and the approximate age of the fossil has been placed at 10,000 years old. What can the geologist assume about the rock layer based on this data and what principle supports this assumption?

Answer 1

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scientists can assume that the rock layer is not nearly as thick as the layer of make up on your face

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i guess that mirror is just too distracting huh

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Answer 2

Three concepts are important in the study and use of fossils:

(1) Fossils represent the remains of once-living organisms.

(2) Most fossils are the remains of extinct organisms; that is, they belong to species that are no longer living anywhere on Earth.

(3) The kinds of fossils found in rocks of different ages differ because life on Earth has changed through time.

Scientists look for ancestors and descendants through geologic time.

1.Inference of patterns of evolution.

The findings of palaeontologists will aid mapping of a "tree of life". Fossils provide the only direct evidence of life in the past, and are used in the interpretation of anatomical features and for studies of relationships of living organisms.

2.Inference of past environments.

The pattern of evolution with environmental change aids the reconstruction of past environments - and possibly indicates the future as our climate changes.

3.Earth Age.

Fossils are also used as an indication of the age of rocks in which they occur, and to provide correlations between rocks of the same age over wide geographical areas - the science of biostratigraphy.

Several methods r considered  for studying fossils..

Stratigraphy is the study of rock strata in terms of time and space, and deals with the correlation of rocks between different localities. Correlation may involve the use of:

    * Fossils ('biostratigraphy'),

    * Rock Units ('lithostratigraphy'), and

    * Geological time-units or intervals - 'chronostratigraphy'.

Stratigraphic ranges and origins of some major groups of animals and plants.

http://pubs.usgs.gov/gip/fossils/success...

For more info:

http://www.bbm.me.uk/portsdown/PH_500_St...

http://www.bbm.me.uk/portsdown/PH_210_Fo...