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How did oxygen first enter earths athmosphere?
Oxygen first entered Earth's atmosphere through the process of photosynthesis by early cyanobacteria and other photosynthetic organisms. These organisms produced oxygen as a byproduct of their metabolic processes, gradually increasing the amount of oxygen in the atmosphere over millions of years.
Should you put chemicals in your pool first or skim and vacuum first?
It is best to skim and vacuum your pool first, as this will remove any debris or dirt that has accumulated in the water. Once the pool is clean, you can then add the necessary chemicals. Skimming and vacuuming first ensures that the chemicals are distributed evenly and more effectively in the clean water.
Is nail polish a element compound or a mixture?
It's a few things. First, it's a mixture of a lot of different chemicals. It's also a Suspension--solids dispersed in a liquid. This is why you have to agitate the bottle by twirling it between your hands (do NOT shake nail polish unless you like bubbles in your nails!) before you use it. The various products in it are all compounds.
What was first responsible for changing the formerly poisonous atmosphere to an oxygen-rich atmosphere have today?
The evolution of photosynthetic bacteria and later on, plants, was responsible for changing the formerly poisonous atmosphere to an oxygen-rich one we have today. These organisms released oxygen as a byproduct of photosynthesis, gradually increasing levels of oxygen in the atmosphere.
What are the advantages to a chemical fume hood?
A chemical fume hood provides a safe environment for working with hazardous chemicals by containing and removing fumes, vapors, and gases. It helps protect laboratory personnel from exposure to harmful substances and maintains a clean workspace.
What is earths atmosphere is primarily composed of?
the earth first atmosphere is troposphere
Earths atmosphere was first changed by?
photosynthesis
The first Indian Satellite aryabhatta was launched from?
the earths atmosphere
The first layer of earths atmosphere touching the earth?
troposphere
What was most abundant gas in the earths first atmosphere?
This gas was carbon dioxide.
Who was the first to prove comets lie beyond earths atmosphere?
TyCHO BRACHE
Can the troposphere layer be considered as earths first protective layer?
Actually, the Troposphere Layer can be considered as Earth's first protective layer, because its well-the atmosphere's first layer. You can think of it that way to remember which is Earths first layer.
The first layer of the earths atmosphere touching earths surf?
The first layer of the Earth's atmosphere is called the troposphere, and it is in direct contact with the Earth's surface. This layer is where weather events occur and where most of the Earth's clouds and precipitation are found. Temperature usually decreases with altitude in the troposphere.
What are three ways in which the atmosphere is important to earth?
first of all it helps by : 1. the atmosphere gives earths animals or creations air to breath 2. the atmosphere helps plants grow 3.
What happened to the first American space station in 1979?
On 11 July 1979, Skylab reentered the earths atmosphere.
The Earths atmosphere is composed of how many different layers?
The Earth's atmosphere is composed in FIVE different layers. The first one is the Troposphere, which is the closest to the Earth's surface. The second one is the stratosphere. The third atmosphere is called the mesosphere, which contains the coldest air temperature. The forth is thermosphere, which contains the ionosphere that are made up of electrically charged particles (note that the ionosphere is not one of the atmosphere). The last part of the atmosphere is the exosphere, which is the region of the space travel. It is also the furthest atmospheric layer from the Earth.
What was the first ever man made object to leave the earths atmosphere?
The first man-made object to leave Earth's atmosphere was the V-2 rocket launched by Germany on October 3, 1942.
