It takes a while for air friction to heat them through. Also some are massive enough that they never burn up but hit the earth instead, becoming what we call meteorites.
First, we have a nice thick atmosphere that deals with many meteors. Secondly, weathering and erosion erase the marks fairly quickly.
Most do burn up entirely but the very largest ones do not completely burn up.
photosynthesis
the earths atmosphere
troposphere
Meteors are space debris made of rock or metal. When they enter the Earths atmosphere they heat up through friction with the air and glow very brightly. They can be seen streaking across the sky and seem to be on fire. Hence the name fireball.
According to the Bible in its first Book called Genesis, you can read the following in Genesis 1: 2 " The earth was formless and desolated, and there was darkness upon the surface of the watery deep. Genesis 1: 1-30 explains in which order everything was created. Genesis 2: 6 speaks about a mist that would go up from earth, and it watered the entire surface of the ground. Humans and animals breathe in oxygen, give off carbon dioxide. Plants take in carbon dioxide give off oxygen . According to Genesis 1: 17 God made the expanse of the heavens to shine upon the earth. In photosynthesis plants use sunlight. carbon dioxide, water and minerals to produce oxygen and food products. Today we know that the most abundant gas in the earth is 78% Nitrogen, 21% Oxygen 1% all other gases. Some gases would be deadly by themselves, but mixed together in the atmosphere they sustain life. The sky is a miraculous achievement. Without water, animal and plants could not get the nutrients they need. The earth bears the unmistakable stamp of deliberate design, and there is no design without a designer. The Bible has this to say in Hebrew 3: 4. " Every house is constructed by someone, but he that constructed all things is God".
TyCHO BRACHE
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.
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.
My guess is on earth probably in the ocean or on pangea or something. There also was a large earthquake everyday when meteors hit the earth and added to the earths mass to create the planet.
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.