There are a couple features unique to mammals, here are some:
1. Mammary Glands- evolved from modified sweats glands, these are used to create milk for offspring. Only females produce this milk.
2. Hair- this is an adaptation that provides insulation to keep the animal warm, provide protection of the skin, and sometimes camouflage the animal through the hair's color patterns.
3. Sweat glands- while being unique to mammals, they are not present in all of them. For example, whales do not have sweat glands at all because they live in the ocean!
Rubber or plastic cutlery are most likely to be most acceptable for a child, spoons are less dangerous and come in different colors and shapes so childs can get familiar with them and start the learning eating process by themselves, then they are presented with the fork, which also comes in different shapes and colors, this will complement the training for the infant.
Answer: The correct answer is option (A) Anaerobic respiration.
Explanation: Cellular process releases energy by breaking down glucose when oxygen is not available is anaerobic respiration. Anaerobic respiration occurs in those plants where oxygen is not available. It is mostly occur in plants when roots are present in water logged condition. In anaerobic respiration, glucose is broken down into lactic acid and energy is released.