Why would Putin threaten to invade Ukraine when Ukraine threatened to expel the Russian fleet from Sebastopol?
What will be an ideal response?
Answers should explain the historically close relationship with Ukraine.
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Distribution of potential evapotranspiration during the year:
In North America, a toxic weed called leafy spurge was accidentally introduced and has grown and spread rapidly, covering millions of acres in north central United States and south central Canada. Leafy spurge is generally avoided by cattle and horses and may be toxic to them. Thus, rangeland where leafy spurge has spread has been damaged by the invasion of this plant. Flea beetles alone are unlikely to eliminate all of the leafy spurge in a region. Instead, the number of leafy spurge plants and the number of flea beetles in a particular community may stabilize. At this point, the leafy spurge and flea beetle populations
A. have exhibited exponential growth followed by a crash. B. have experienced constant growth. C. are still experiencing exponential growth. D. are experiencing environmental resistance.
In the reaction below, what does the symbol ? mean? OH- + NH4+ ? H2O + NH3
A) It means that the forward and backward reactions are happening at the same time. B) It means that the reaction cannot decide which way to go. C) It means that the forward reaction does not progress. D) It means that the backward reaction happens as fast as the forward reaction and so the proton is not transferred at all. E) none of the above
This stage of a thunderstorm is associated with cool downdrafts.
A. Mature stage B. Dissipating stage C. Cumulus stage