1. How do humans use energy resources? 2. Give an example of how energy transformations are involved in the
3. Identify two sources of renewable energy.
pls help

Humans use electrical and thermal energy to cook. we also can use kinetic energy for hand held flashlights that transform it into electrical energy. solar is a common energy but there

is also kinetic water based and wind.

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.