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.
Answer:
<u>B. Tectonic</u>
Explanation:
Playa is generally dry and flat. This valley is located in New Mexico, Bootheel region. Valley is noteworthy for the lake Playa i.e a dry lake in the north. This region of desert extends to northwards to the foothills of various mountain ranges, canyons and washes. It's a liner north to south trending towards mountain ranges and flat in south. Playas are formed due to evaporation of water that leaves salt behind it may be underlined with stratified sand, silt and clay. The salt flat valley also called salt marshes. A variety of playas bed occurs in restricted basins that are without outlets. The salts that form these are Chlorine, sulfate, and carbonate. Hence this landform is a product of tectonic forces and factors that influence the growth and development of this valley.
Answer:
Explanation:
Accretion occurs as mantle is added to the growing edges of a plate, associated with seafloor spreading. This hot added material cools down by conduction and convection of heat. ... Mantle convection causes tectonic plates to move around the Earth's surface.
No, that's false
abu bakr ruled after muhammad
The increasing amount of usage of sexual protection.
