Why do you have to we use carbon-14 to measure the half-life of a decaying tree?(1 point) Responses All once-living things contain carbon-14 and the amount begins to decrease when the tree dies. All once-living things contain carbon-14 and the amount begins to decrease when the tree dies. All once-living things contain uranium-238 and the amount begins to decrease when the tree dies. All once-living things contain uranium-238 and the amount begins to decrease when the tree dies. All once-living things contain uranium-238 and the amount begins to increase when the tree dies. All once-living things contain uranium-238 and the amount begins to increase when the tree dies. All once-living things contain carbon-14 and the amount begins to increase when the tree dies.

Answer 1

The correct response is: All once-living things contain carbon-14 and the amount begins to decrease when the tree dies.

Carbon-14 dating is used to determine the age of once-living things by measuring the amount of carbon-14 remaining in their organic material, which decreases over time after death.