Answer:
D. The scientist uses tennis balls to show the position of the planets and Sun.
Explanation:
In a layman's terms, the solar system is a system consisting of the sun and the planets that orbits around it. These planets are as follows; Mercury, Mars, Earth, Saturn, Venus, Jupiter, Neptune, Uranus etc.
According to this question, using a physical model to represent or describe the solar system means the use of physical objects that can easily be seen or identified. Based on this explanation, the use of tennis balls to show the position of the planets and Sun suits the physical model description of our solar system.
<span> They can be classified according to the core structural functional groups' locations as </span><span>alpha- (α-), beta- (β-), gamma- (γ-) or delta-(δ-)</span><span> amino acids; other categories relate to </span>polarity<span>, </span>pH<span> level, and side-chain group type (</span>aliphatic<span>, </span>acyclic<span>, </span>aromatic, containing hydroxyl orsulfur<span>, etc.). In the form of </span>proteins<span>, amino acids comprise the second-largest component (water is the largest) of human </span>muscles<span>, </span>cells<span> and other </span>tissues.[5]<span> Outside proteins, amino acids perform critical roles in processes such as </span>neurotransmitter<span> transport and </span>biosynthesis<span>.</span>
If there is a leakage of the manure pond into the near by river, the growth the nitrates and phosphates in the leak causes an overgrowth of algae leading to eutrophication.
<h3>What is a manure?</h3>
A manure is that which is used to improve the fertility of the soil. It is composed of the nutrients that are required by the soil. We know that each pig produces 30 liters of manure each day, and the average feedlot holds 900 pigs. Hence, each day, 30 * 900 = 27000 litres of manure is produced.
Within a period of 30 days, a total of 27000 litres of manure * 30 = 810,000 litres of manure is produced. If there is a leakage of the manure pond into the near by river, the growth the nitrates and phosphates in the leak causes an overgrowth of algae leading to eutrophication.
Learn more about eutrophication: brainly.com/question/13232104?
They fall under Archaea and Bacteria.
see if you can find clues is all i know to tell you