Answer:
Explanation:
Based on the scenario being described within the question it can be said that the most likely reason for this misconception would be that the spiral galaxies looked like clouds of gas and dust through telescopes because of their distance from Earth. During that time telescopes were still not as advanced and could only see so much, nowadays they are much more advanced and these galaxies are being analyzed and understood more clearly.
Human body is made of ten different systems. All the systems require support and coordination of other systems to form a living and healthy human body. If any one of these systems is damaged, human body will become unstable and this lack of stability will ultimately lead to death. The instability caused by damage of one system cannot be stabilized by other systems because functions of one system cannot be performed by other systems. Knowledge of human body systems is very important for a medical professional because it is the base of all medical sciences and clinical practices. Although, generally, the structural aspects of human body systems are studied in anatomy and the functional aspects are studied in physiology but it is very important to have a coordination between the two subjects because knowledge of structure is incomplete without the knowledge of function and the knowledge of function is incomplete without the knowledge of structure.
A particular species of fish were split by the formation of the Isthmus of Panama a long time ago. The fish developed changes in their genes to adapt to the new environment and became two different species. This process is called allopatric speciation, as shown in the image.
Allopatric speciation takes place when a species splits into two separate groups which are isolated from each other. Physical barriers like straits, waterways, cliffs or mountain ranges stop the gene flow between the two groups. This leads to the two groups of species diverging from each other as they start to adapt to the two different environments.
