Answer:
mountains and highlands, river basins, and coastal plains. Mountains and coastal plains generally run in a north-south direction, while highlands and river basins generally run in an east-west direction.
Answer:C It will cost 10 million dollars to achieve our objective of rebuilding the highways after the earthquake.
Explanation:
Natural disaster is an adverse effect that occurs from natural processes in the Earth which includes floods, hurricanes, tornadoes, volcanic eruptions, earthquakes. Natural disaster often leads to loss of life and damage of properties there by affecting the economy.
This will incure more cost through reconstruction of damage properties caused through natural disaster.
Many roads will be reconstructed, houses, offices, may displaced will be catered for hence it will cost over 10 million dollars to rebuild and achieved this aim.
Answer:
Iron oxides appeared after the emergence of cyanobacteria.
Explanation:
The composition of Earth's atmosphere in the first couple of billions of years of its existence was nothing like the atmosphere of today. This had a big influence on the processes that were taking place, or rather what processes and to what extent could have happened in those conditions. One big difference between the atmosphere then and after is the levels of oxygen.
Until the appearance of cyanobacteria, the oxygen levels in Earth's atmosphere were very low, and the same goes for the oceans. With a lack of oxygen, the process of oxidation was absent as well. The cyanobacteria though managed to produce oxygen, and this was on such a high scale that they changed the composition of Earth's atmosphere and the oceans. Not just that this enabled complex lifeforms to develop, but it also enabled the process of oxidation. Iron oxides for example occurred only after cyanobacteria appeared, and this can easily be seen when dating the oldest iron oxides and compare that age with the appearance of cyanobacteria.
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It has a radius of 1220 km.
