Choose the best definition of a fossil. a. a rock that contains information about an organism b. a bone, tooth, shell, or other hard part of an organism that has been preserved c. any trace of an organism that lived in the past d. any part of a dead organism

Verified step by step guidance

1. Understand the term 'fossil': A fossil is any remains, impression, or trace of a once-living thing from a past geological age. This includes bones, shells, imprints, and preserved remains.
2. Analyze option a: While fossils are often found in rocks, the definition is too broad and does not specifically mention that the fossil must be from a living organism.
3. Analyze option b: This option specifies that fossils are parts like bones or shells that have been preserved, which aligns well with the definition of fossils as parts of organisms.
4. Analyze option c: This option is also correct as it includes any trace of an organism, which encompasses not just physical parts but also impressions and other traces.
5. Choose the best option: Both b and c are correct, but c is more comprehensive as it includes not only hard parts but also other traces of organisms. Therefore, the best definition of a fossil is option c.

Key Concepts

Fossil Definition

A fossil is defined as any preserved remains or traces of organisms that lived in the past. This includes not only bones and shells but also imprints, tracks, and other evidence of life. Understanding this broad definition is crucial for distinguishing between different types of fossils.

Types of Fossils

Fossils can be categorized into two main types: body fossils and trace fossils. Body fossils are the actual remains of the organism, such as bones or shells, while trace fossils include footprints, burrows, and other signs of activity. Recognizing these categories helps in identifying the correct definition of a fossil.

Paleontology

Paleontology is the scientific study of fossils and ancient life forms. It involves analyzing fossilized remains to understand the biology, ecology, and evolution of organisms. This field provides context for the definitions of fossils and their significance in understanding Earth's history.