The second and third one I believe
Most adult placental mammals have no remaining trace of the cloaca. Being placental animals, humans only have an embryonic cloaca, which is split up into separate tracts during the development of the urinary and reproductive organs.
Is the matter we take in when we eat only used for cellular respiration?
Answer: Food is your body's only supply of energy. However, this energy must be converted from the apple (or any other food you eat) into an energy source that your body can use. The process of getting energy from your food is called cellular respiration.
The tree would contain carbon.
I believe it's D. Tell me if I am wrong.