Question

1. what are the two ways of finding the age of a fossil?
2. describe how relative dating works.
3. what does absolute dating do?
4. why is the element carbon - 14 important for paleontologists?

paleontology and archeology
relative dating and absolute dating
absolute dating and estimation
relative dating and tree rings

Explanation:

1. The dropdown option directly matches the two core fossil dating methods.
2. Relative dating uses rock layer order and index fossils to compare fossil ages without exact dates.
3. Absolute dating uses radioactive decay to calculate a fossil's exact numerical age.
4. Carbon-14 is a radioactive isotope that decays at a known rate, allowing absolute dating of organic fossils up to ~50,000 years old.

Answer:

1. Relative Dating and Absolute Dating
2. Relative dating works by comparing the position of fossils in rock layers (stratigraphy) or using index fossils to determine if a fossil is older or younger than another, without assigning an exact numerical age.
3. Absolute dating calculates the exact numerical age of a fossil by measuring the decay of radioactive isotopes in the fossil or surrounding rock, using the known half-life of the isotope.
4. Carbon-14 is important because it is a radioactive isotope present in all living organic matter; by measuring the ratio of remaining carbon-14 to stable carbon-12 in a fossil, paleontologists can use its known half-life (~5730 years) to determine the absolute age of organic fossils up to approximately 50,000 years old.