Answer: that is the answer
supplying oxygen and nutrients to tissues,Explanation:
In 1885 Virchow said that all cells exist from pre-existing cells
<span>Pets might have fleas and other diseases that could be transferred to the food either by the pet directly coming into contact with the food or by way of employees after they come in contact with the pet. This is especially dangerous if the food establishment does not have very strict sanitation rules.</span>