Which type of wave from a steeply sloping coastal region?

Which was not a country that massively built up its navy in the early 1900s? germany china united statesbritain

What has been a consequence of human economic development in advancing nations? a) subsistenceb) conservationc) photosynthesisd) pollution

Plants in the arctic tundra must be able to live a) in wide range of temperatures b) without sunlight for the most of winterc) without waterd) at high elevations