1. The law of superposition states that the younger fossils are found at the top of the rock layers. Given this law, which statement below is accurate? a. A is older than B b. C is older than D C. D is older than A d. The oldest of all of the layers is A. 2. Each layer has a co fonu Inn

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

every el niño cycle is different. every year.