I think is D Carbon dioxide
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Answer:
amylase
Any of a class of digestive enzymes, present in saliva, that break down complex carbohydrates such as starch into simpler sugars such as glucose.
Answer:
It helps to make scientific inquiries
Explanation:
Environmental science is a broad discipline which includes geology, physics, biology etc.
The nature of inquiries is often scientific. The procedures to follow in making useful deductions about environmental phenomenon must be guided scientifically.
Scientific methods is a systematic approach in which scientists can gather facts. Through their numerous observations, they formulate a sort of scientific guess called an hypothesis. Hypothesis can be tested over time and theory springs up. These theories can then be applied to tackle various related scientific puzzles.
Energy is required for the normal functioning of the organs in the body. Many tissues can also use fat or protein as an energy source but others, such as the brain and red blood cells, can only use glucose. Glucose is stored in the body as glycogen. The liver is an important storage site for glycogen.
Answer:
Carbon-14
Source: "Carbon-14 dating is a way of determining the age of certain archaeological artifacts of a biological origin up to about 50,000 years old. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.
" (HowStuffWorks)