Chemical bonds should be the correct answer choice.
Answer:
3. detection and response to stimuli
Explanation:
According to the given information, the thermoreceptors present in the skin layers of dogs and cats sense the change in the temperature of surroundings. When the temperature is reduced during a cold day, the sensory information about the same is sent to the central nervous system which in turn sends the motor information to the related muscles and glands.
One such response towards the lower temperature conditions is an expansion of their skin coat layers to insulate the underlying tissues from the cold surroundings. The same response (expansion of skin coat) is produced when these animals sense the danger of the presence of large predators around them.
Answer:
E. coli is a specie of bacteria that are found in the gut of many animals which helps in maintaining the conditions necessary for the digestion of food.
Explanation:
E. coli is a bacteria which causes no harm to the human or other animals while living in the stomach. In stomach, it helps the digestion of food and make nutrients like vitamin K, which is necessary for the growth of animal body and make the stomach healthy.
