Answer:
Living organisms often contain trace amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus.
Explanation:
grass, grasshopper, frog, snake
Energy is transfered from a molecule of sugar to atp by cellular respiration
Making a hypothesis is the first step of the scientific method, then it is disproved we start over from the beginning. Make a new hypothesis, test it again and see if the data supports the hypothesis. Continue this until you have a proper conclusion.