Oort cloud: a spherical region that surrounds the solar system, that extends from the kuiper belt to almost halfway to the nearest star, and that contains billions of comets
An obligatory parasite is a parasite that can not complete its life cycle without exploiting a suitable host
Carbon shares 4 electrons to complete its valence shell
A hypothesis can become A. a scientific theory if it is supported by repeated experimentation.
Answer:
Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.
Explanation:
