D. Cholinergic antagonists
Answer:
C
Explanation:
DNA polymerase is an enzyme, and when an enzyme is put in conditions that don't suit it, it unravels and becomes useless. Because the copy of DNA isn't being made (S phase is the copying phase, after all), cellular division will come to a stop.
Answer:
The freshwater biome is defined as the biome that comprises the water bodies such as lake, pond, rivers and wetlands and where the concentration of salt is almost less than 1%. It occupies near about 20-25% of the total earth's surface.
Generally, the characteristics of the photic zone of a freshwater biome include-
- It forms the upper layer of the freshwater body, ranging from the surface of the water up to a certain depth.
- It is the layer where the sunlight can easily penetrate.
- The photosynthesis process is driven out extensively by the aquatic plants existing in this layer.
- The primary producers are present in this zone that provides the food to almost all the freshwater organisms.
- In this zone, the rate of respiration is equal to the rate of photosynthesis.
Answer:
Option (D)
Explanation:
Environment refers to all the living and non-living components that surround us. There occur various processes such as precipitation, evaporation, weathering and erosion, deposition, and the processes that are associated with the various cycles such as geochemical cycle, nitrogen cycle, carbon cycle, phosphorous cycle and so on.
These processes occur in all the regions on earth and at different rates, and they are comprised of energy that is constantly in the flow from one region to another. These environmental changes and the forces that are involved in it are dynamic in nature.
Thus, the correct answer is option (D).
