What's the currency used in Poland?

When it is a high tide in georgia, usa, where on earth is another place that is also experiencing a high tide

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks

In a command economy, the majority of goods and services are provided by the