People would have to plant more, people could die, animals could die.
Answer:
Bacteria are essential in cycling the nutrients back into the soil for plants to use, and cycling nitrogen back into the atmosphere. Nitrogen is found everywhere in the world, including animal waste, the atmosphere, and decaying matter.
Teenagers require more energy because they are still growing, using up more energy and nutrients than adults would depending on factors like how active they are.
A balanced diet is a diet that contains the proper proportions of carbohydrates, lipids/fats, proteins, vitamins, minerals, and water necessary to maintain good health.
You receive 50% of your DNA from each of your parents, who received 50% of theirs from each of their parents, and so on. In the chart below you can see how the amount of DNA you receive from a particular ancestor decreases over generations. If you go back far enough, there is a chance that you inherited no DNA from a particular ancestor.