This is considered false. Although the percentage of all air remains the exact same regardless of altitude, it all matters about the air pressure in the atmosphere. Even though the percentage would be the same, there would be fewer oxygen molecules at higher altitudes and lower pressure.
It will be 1,2,4
You can’t see x-rays with machine
1. C) The soil will have no nutrients to grow the corn.
2. C) Crops may cause an increase of allergic reactions in humans
3. B) Decomposers
It is law that's the correct answer
Well fossils can tell you a lot about the age of the rock it was found in, and an index fossil are used to used to define periods of geologic time.
