A calorie is a unit of.
Energy.
The Calorie used on food labels is equal to.
1000 calories<span>.</span>
Answer is D) <span>Saliva changes the chemical composition of food
A enzyme is a catalyst for chemical reactions, meaning it either facilitates or initiates a chemical reaction. In this case, saliva uses enzymes to change the chemical composition of food into compounds that our body can easily process and turn into energy. </span>
C)old or young
A dichotomous key is a tool or a used assessment that is utilized by most scientists like biologist and ecologist to organize and classify organisms into sets of classifiable structures like trees, animals, birds, cats, dogs. These are broad descriptions that systematizes a whole family of species into a set category or a whole kingdom in a simple language such as plants or animals.
