Indeed they are. The uranium atoms have separate numbers of neutrons in their nuclei, but still have the same number of protons.
Which soil horizon is mostly composed of organic matter?
It is only between 5 to 10 inches thick and consists of organic matter and minerals. This is the soil layer where plants and organisms primarily live. B: This layer is also called Subsoil. It is mostly made of clay, iron minerals as well as organic matter, which has been washed down to this horizon by rainwater.
Answer:
A.
Explanation:
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░░░▌░▄▄▄▐▌▀▀▀░░ This is Bob
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░░░░░░░▀███▀█░▄░░ Over brainly
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Because an egg is an entire biological structure, made up of a mixture of chemicals rather than a single pure chemical compound, there is no one chemical formula to describe it. However, the basic structure and chemistry of an egg is highly conserved and varies little from species to species.
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