Answer:
Yes, that is correct, 120° and 60° are the most widely used supplementary angles.
When scientists discuss the great oxygenation event, they are referring to a time when the transition from the mildly reducing Archean atmosphere-ocean system to the oxygenated atmosphere and shallow oceans of the early Paleoproterozoic that started between ~2.4 and 2.3 Ga and ended between 2.1 and 2.0 Ga.
- here The Great Oxidation Event, also called the Great Oxygenation Event, the Oxygen Catastrophe, the Oxygen Revolution, and the Oxygen Crisis, was a time interval when the Earth's atmosphere and the shallow ocean first experienced a rise in the amount of oxygen.
- in this event Gradually, the accumulated oxygen started escaping into the atmosphere, where it reacted with methane. As more oxygen escaped, methane was eventually displaced, and oxygen became a major component of the atmosphere.
- The Great Oxygenation Event (GOE) was the creation of free oxygen in our atmosphere. It was caused by cyanobacteria doing photosynthesis
to know more about photosynthesis click here
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Answer:
Explanation:Organic farmers are different from conventional farmers because they choose not to use any chemicals on their farm. This means that they never spray their fields with pesticides or spread any kind of chemical fertilizers. This also means that they never give their animals any non-organic feed or give their animals any drug past a certain age. For a farmer to be able to sell his product as certified organic in Ohio, the soil must have been chemical-free for at least four years. However, it varies from state to state. While in California your soil only has to be chemical-free for one year in some states it may have to be chemical-free for ten! Each organic farmer has his own reasons for choosing to farm organic. Some farmers do it because they feel that it is cheaper to farm organic. They don't have to pay for the chemicals, they get higher prices for their products and they can use a crop rotation to produce the same kind of crop yields. Other farmers do it because they feel that they are producing a healthier product. Most farmers choose to farm organic for a combination of those reasons and others.
New York City is in New York
Answer: Waves
Explanation:
Coastlines are formed due to the continuous battering of the coast by waves. These waves cause soil erosion when they take some coastline material back to the water as they recede. They also deposit some material on the coast when they make contact.
This causes the coastlines to take different shapes as the process goes on and on. Some coasts will be harder to shape however when the waves will be unable to erode the coast so easily because those coasts are made of harder material like rocks. That's why rocky coastlines stay more of less the same for a long period of time.