Mention three important features of fossils which help in the study of evolution.

Fossils are defined as the remnants or traces of dead plants and animals that died more than 10,000 years ago.

Fossils are mainly formed when plants and animals die in watery environments or are buried in mud and silt. Soft tissues decompose quickly leaving the hard bones or shells afterward.  As time passes, sediment accumulates over it and hardens to form rock. These fossils provide us with evidence related to evolution.

For example, archeopteryx acts as a connecting link between aves and reptiles.

The study of fossils is known as Palaeontology. It determines the age of fossils through the carbon dating method.