54. Amphibians are cold-blooded animals, meaning they do not have a constant body temperature but instead take on the temperature of their environment. They have moist, scaleless skin that absorbs water and oxygen, but that also makes them vulnerable to dehydration (loss of bodily fluids).
55. The first and foremost characteristic of the reptiles is that are cold blooded. They are able to regulate their inner body temperature to the temperature of the environment. They have scaly skins but absence of hair or fur. The scales of the reptiles develop as a surface cells filled with Keratin.
56. Characteristics of Birds. Birds are endothermic and, because they fly, they require large amounts of energy, necessitating a high metabolic rate. As with mammals, which are also endothermic, birds have an insulating covering that keeps heat in the body: feathers.
57. Mammary Glands.
Undercoat and Guard Hair.
Jaw and Ear Bones.
Four-Chambered Heart and Diaphragm.
Complex Brain Functions.
The number of neutrons
and the mass number
I believe the correct answer to this question is B.
This is the correct answer because the other options can be eliminated and this choice represents the proper process described in the question. Answer choice A describes photosynthesis, which is not being asked about in the question. Answer choices C and D are either partially false or describe an unmatching process with the question.
I hope this is correct and helps you!
Answer: The purification gave evidence of the identity of the transforming material, meaning that the possible transforming substance was narrowed down.
Explanation: Removing lipids and carbohydrates suggest that these are not the transforming materials and removing protein suggests that this is also not a transforming material.
