Of the annual global total of fixed nitrogen, human activities account for roughly 45%.
Nitrogen fixation is the global amount of nitrogen that gets assimilated by any living organism into another organic compound. The organic compound can be ammonia or nitrogen ions.
Of the total global annual nitrogen fixation, humans account for a great amount. The current estimation is that humans cause 45% of the nitrogen fixation annually. The leading causes of this high rate are the burning of fossil fuels and increased agricultural fertilizer use.
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The answer is it occurs in sex organs.
Explanation: Meiosis only occurs in reproductive cells, as the goal is to create haploid gametes that will be used in fertilization. Meiosis is important to, but not the same as, sexual reproduction. Meiosis is necessary for sexual reproduction to occur, as it results in the formation of gametes (sperm and eggs).
Meiosis results in 4 identical haploid cells
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Different sounds with the same pitch still sound different because they all have different distribution of frequencies. But this happens because of timbre and every instrument has its own timbre.
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Gravitational force is always an attractive force.
Answer:
D, provides the body with building blocks.
Explanation:
Along with calcium and vitamin D, milk contains proteins, which your cell uses for so many countless functions.
