Alternation of generations is the fluctuation of the diploid and haploid stages in plants. The diploid stage occurs through mitosis while the haploid stage works through meisos and asexual reproduction. In vascular plants, the diploid stage produces seeds. In non-vascular plants, the haploid stage produces the spores.
This increase in volume leads to a decrease in intra-alveolar pressure, creating apressure<span> lower than atmospheric </span>pressure<span>. As a result, a </span>pressure<span> gradient is created that drives air into the </span>lungs<span>. Figure 3. </span>Inspiration<span> and expiration </span>occur<span> due to the expansion and contraction of the thoracic cavity, respectively.
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C. Amino Acids.
Proteins consist of strands of amino acids, which is produced in the ribosomes of the cell.
The oldest type of bacteria is over 3 million years old I think. It comes from the cyanobacteria family! The bacteria is a type of algae! Discovered by Gregorio V. in the Late 1900's.