Answer:
Protein
Explanation:
Protein is made up of amino acids that help to grow, maintain and repair different tissues in the body- including muscle.
A true-breeding<span> organism, sometimes also called a purebred, is an organism that always passes down certain phenotypic traits (i.e. physically expressed traits) to its offspring.</span>
Answer:
Producers are always at the beginning of a food chain. Producers begin every food chain because they can make their own food.
Everything we have today is because of the industrial revolution
