false
Explanation:
The half-life of C-14 is shorter than that of U-238. Every radioactive isotope have their distinct and unique half-life.
- The half-life of an isotope is the time taken for half of the radioactive nuclei to disintegrate.
- The shorter the half-life, the faster an isotope decays.
- C-14 has an half life of 5700 years. It is used for dating archaeological materials.
- U-238 has an half life of 4.5 billion years. It has been used to date the age of the earth.
Half - life brainly.com/question/1695370
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Answer:
C. I and II only
Explanation:
i took the test and got it right
Your answer should be asthenosphere!
When using the term 'life form' I assume you are speaking of animals, bacteria, etc. Scientists take years to find their desired conclusion because of how the environment tends to change quite frequently (Depending on where the creature lives). The earth is constantly revolving and rotating, which causes changes in the environment. These changes affect the animals behavior, eating habits, and overall chances of survival. A factor that must also be considered is that scientists have to examine these creatures in their natural habitat which can be an issue depending on where they live. For example, if I were to study the behavioral patterns of a Leopard, it would be extremely difficult to do so because the Leopards are specifically keen at camouflaging in their environment. That would make observing its behavioral patterns very frustrating and time consuming. In a way, mother nature is always against us.
(Hope this helps)