1. Temperate deciduous forests
2.?
3.savannas
4.temperate grassland
Answer:
c
Explanation:
no explanation (plz give brainliest)
It is C because scientists discovered hypothesis before experimental
Proteins, among the most complex of all organic compounds, are composed ofamino acids , which contain carbon, hydrogen, oxygen, and nitrogen atoms. Certain amino acids also have sulfur atoms, phosphorus, or other trace elements such as iron or copper.
Answer is b u are correct