What is the primary function of the respiratory system?

question 5 options:

1)

transportation of blood

2)

oxygenate blood

3)

absorption of nutrients

4)

none of the above

1

Explanation: Oxygen moves in and carbon dioxide moves out of body.

thymine. in rna, thymine is replace by uracil

yes its like the dead sea which is full of salt which makes you stay afloat

so yes an egg will float in salt