Not much information ab the question ?
Answer:
Taxonomy
Explanation:
The science that includes naming, describing, and classifying organisms is called taxonomy. The early systems of classification of plants and other organisms were based on structural differences alone such as the early classification given by Linnaeus. However, morphological feature alone does not describe a species and the reproductive isolation makes the basis of most accepted biological species concept, therefore, the genetic evidences are also taken into consideration during the naming and classification of organisms.
The answer is A I hope this works
<span>18.) Apparent retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system, as observed from a particular vantage point. Thus option B is the correct answer. 19) Nicolas Copernicus developed the heliocentric model in the 16th century, which led to the believe that the sun is the center of the Universe, with the planets (including Earth) and stars orbiting it. 20.) A gas giant is a large planet composed mostly of gases, such as hydrogen and helium, with a relatively small rocky core. The gas giants of our solar system are Jupiter, Saturn, Uranus and Neptune.</span>
Answer: Because the heart model is always in anatomical position. It is always based on the patient.