A sample of small soluble organic molecules was analyzed and found to contain the elements carbon, oxygen, hydrogen, and nitrogen. These molecules were most likely A) Carbohydrates B) Lipids C) Nucleic acids D) Proteins

Protein

Explanation:

Protein are organic molecules that contain carbon, oxygen, nitrogen and hydrogen. They are one of the major constituents of living matter which contain long chains of amino acids that are linked together by polypeptides bonds. The protein has a monomer that are amino acids which are contain carbon central atom and carboxyl ground which contain hydrogen and oxygen.

the dark variety, as they are not visible on the dark tree barks

explanation:

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.