u are lying u are not giving 39 points u are just giving 5
Answer: birds
Explanation: because birds have wings and they can fly
That would be integumentary system
Answer:
High amounts of fluoride
Explanation:
Teeth cleaning agents can contaminate one's blood with fluoride, something that it is only healthy to accumulate a small amount of.
Answer:
after nutrients are absorbed during digestion,the excretory system removes faeces through the rectum. these work together to maintain oxygen homeostasis.