Which moraine would be most useful for tracing valuable gold deposits back to their bedrock source area?

This refers to weather and atmospheric conditions measured over a long period of time.

Arecent poll of 500 residents in a large town found that only 36% were in favor of a proposed referendum to build a new high school. find the margin of error for this poll if we want 95% confidence in our estimate of the percentage of residents in favor of this proposed referendum.

What would you call a political system that is only meant to last for a short time