How do human activities alter abiotic parts of an environment?

Match the digestive enzymes to the macro molecules they to digest. down fats into glycerol and fatty acids down carbohydrates into simple sugars down nucleic acids into nitrogenous bases and simple sugars down proteins into amino acids

Which element is found in both dna and proteins

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm