The best answer is d - Water.
Plasma is a water solution that is pale yellow in color in which all other parts of the blood are suspended.
Plasma is made up of approximately 92 % water. Proteins, enzymes, glucose, amino acids, minerals, urea, vitamins, uric acid, antibodies, salts and hormones make up the remaining 8% .
Whole blood is composed of 55% plasma. Plasma in blood acts as a solvent for gases, electrolytes, nutrients and important proteins vital to life.
The correct sentences to correctly characterize marine reptiles are:
C. Since they drink seawater, they have large kidneys to filter excess salt.
D. Their skin prevents salt from entering their bodies.
F. They can control their buoyancy using their lungs.
<h3>What are reptiles?</h3>
Reptile is a class of animals that has animals like crocodiles, snakes, lizards, etc. These are cold-blooded animals. They are found in both land and water.
They are marine reptiles so, their kidneys and skin are adapted to filter salt, and save them from excess salt. Buoyancy is used when the animal or human dives into the water. These reptiles have lungs to do buoyancy.
Thus, options C, D, and F are correct regarding the characters of reptiles.
Learn more about reptiles, here:
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Trials.
Methods, control, and variables aren’t the experiments themselves.