Most animal and plant species we see in the fossil record are extinct, or no longer living. In fact, of all the species that ever lived, 98% are extinct. Animals and plants become extinct over time as a result of natural processes. Their habitat might change or a disease might wipe out a species.
The answer: Peritoneum.
The peritoneum is the serous membrane that lines the abdominopelvic cavity.
This membrane is composed by two layers: parietal peritoneum and visceral peritoneum. This membrane supports the abdominal organs and serves as a channel for their blood, lymphatic vessels and nerves.
See attached scan for answer which is pdf file Scan 0009 or 0.01M HCl is pH of 2, water is pH of 7 and NaOH concentrated is pH of 14. So standard water is neutral, HCl at this concentration is quite acidic and concentrated NaOH is very alkaline.
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Answer:
carbon fixation, reduction phase, carbohydrate formation, and regeneration phase.