I think they use the scientific method
The correct answer is A.chemical energy in the bonds of food molecules.
The cells require a constant supply of energy to generate and maintain their functions. Sugars are most commonly used as fuel molecules (especially glucose). Food Molecules Are broken down in three stages: the first step is digestion (intestine), second is glycolysis (cytosol) and the third is the citric acid cycle together with oxidative phosphorylation (mitochondria). During the process of oxidative phosphorylation, ATP is produced.
The right answer is The texture.
In petrography, the texture (sometimes called structure) of a rock characterizes the arrangement of the crystals between them at the scale of the sample, the thin slice or even on a finer scale.
Texture is a characteristic determined by the size, shape and disposition of minerals in a rock that is observed at the microscopic scale. It allows to build the relationship between these characteristics and the conditions of formation of a rock (especially in the case of magmatic rocks, the rate of cooling).
Answer:
A. Includes things that people need and use
Explanation:
