The correct answer is - cyanobacteria.
The atmospheric oxygen came from the cyanobacteria. These were one of the earliest living organisms on Earth. The cyanobacteria was using photosynthesis in order to create its own food. The photosynthesis process requires sunlight, carbon dioxide, water, and oxygen. The oxygen is mostly released as a waste product from the process of photosynthesis, thus the cyanobacteria were literally releasing oxygen that was ending up into the atmosphere. As more and more cyanobacteria there were across the planet, more and more oxygen they were releasing into the atmosphere, slowly changing the composition of the atmosphere, and setting the basis of it as we know it now.
Clastic Textures
Grain Characteristics. The diameter or width of a clastic sediment grain determines its grain size. ...
Rounding. Clastic sediment grains can be round, angular, or in-between (subangular or subrounded). ...
Sorting. The extent to which all the grains are the same size is known as sorting. ...
Other Aspects of Texture.
Answer:
- TRUE
- TRUE
- TRUE
- FALSE
- TRUE
- TRUE
- FALSE
- TRUE
- FALSE
- TRUE
Explanation:
1) Topography is a major challenge hence answer is TRUE
2) Forecasts made for shorter periods tend to be more reliable and accurate when compared to forecasts made over a longer period hence answer is TRUE
3) pre-frontal squalls lines are linked to thunderstorms answer is TRUE
4) It is easier to forecast the potential of a blizzard than the movement of a tornado FALSE
5) A tornadic waterspout is a Tornado over a body of water ; TRUE
6) Hurricanes require high relative humidity concentrations ; TRUE
7) A microclimate is the average climate a very small area not as big as a city hence answer is FALSE
8) This is TRUE because the thunderstorm can cause the aircraft to lose its control
9) The eye wall of a hurricane forms only at the final stage of the Hurricane hence the answer is FALSE
10) TRUE
Answer:
the earth surface is constantly changing from force in nature the daily process of precipitation wind and land moments result in changes to landforms over a long period of time driving forces into rows and volcanoes and earthquakes people also contribute to changes in the appearance of land
The answer is -2 because you divide the rise by run
