<span>The half-life of carbon-14 is so short that it can be used only to date materials that are less than 70,000 years old</span>
Answer:
Explanation:
in parliamentary systems the upper house is frequently seen as an advisory or a “house of review” chamber; for this reason, its powers of direct action are often reduced in some way. Some or all of the following restrictions are often placed on upper houses: Lack of control over the executive branch.
Answer: I would think D even though none really fit well. The union of the states could be thought of as a federation and our government is a democratic republic.
Hellooooooooo, Are there any choices to choose from? If not I can still help I'm just wondering
