Q. 194.7( 4 Votes )

What are fossils?

Answer :

Fossils are defined as the dead remains of plants and animals that lived in remote past.

Dead plants and animals are decomposed by the microorganisms in presence of oxygen and moisture. The complex substances are broken into simpler substances but sometimes in absence of oxygen and moisture, the dead bodies are not decomposed completely and gets preserved in form of fossils in the rocks.

The methods through which the age of fossils can be determined as follows:

1. Relative method:

Those fossils which are present in more closer layer to the surface of Earth are found to be more recent and those which are present in deep layers are found to be more old.

2. Carbon dating: Since the animals and plants contains carbon-14 atoms which are radio-active in nature. After becoming the fossils, the radioactivity of carbon-14 starts decreasing. So, the fossil age can be found by finding the radioactivity present in the fossil and in living objects and then comparing them.

The presence of fossils proves the evolution. The example of Fossil is: A bird Archaeopteryx has many characteristics of reptiles and seems to be evolved from reptiles.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
All GrammarAll GrammarAll Grammar41 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

Write a short notLakhmir Singh & Manjit Kaur - Physics

Which fossiLakhmir Singh & Manjit Kaur - Physics

Which fossiLakhmir Singh & Manjit Kaur - Physics

Fossil fuels are Lakhmir Singh & Manjit Kaur - Physics

The energy in petLakhmir Singh & Manjit Kaur - Physics

A substance X is Lakhmir Singh & Manjit Kaur - Physics

When the materialLakhmir Singh & Manjit Kaur - Physics