Explanation/Answer:
Among Russia's most important environmental problems: Water pollution is the most serious concern. Less than half of Russia's population has access to safe drinking water. ... Air quality is almost as poor as water quality, with over 200 cities often exceeding Russian pollution limits, and is likely to worsen.
Answer:
5,778 K
Explanation:
The core of the sun is so hot and there is so much pressure, nuclear fusion takes place: hydrogen is changed to helium. Nuclear fusion creates heat and photons (light). The sun's surface is about 6,000 Kelvin, which is 10,340 degrees Fahrenheit (5,726 degrees Celsius).
The nucleus if a cell
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Answer:The largest ocean in the world - the Pacific Ocean - is ten times bigger than the smallest one - the Arctic Ocean.
Explanation:
<span>
A parallelogram is an object that has four sides and its opposite sides are parallel and are the same size.
A trapezoid is an object with four sides and only one pair of opposite sides are parallel the other pair is not.</span>
