Answer:
These tubes are xylem and phloem which help in the transportation of water and nutrients as well as the transport of food
The theory of vitalism states that the living things are unique and are different from the non-living things in the fact that they contain a special entity within themselves. This entity or soul separates them from the non-living things. Both of them are governed by different set of principles. The theory of vitalism was rejected when Wohler succeeding in extracting urea from non-living matter, proving the point that the biological elements can be extracted from the non-living things. The modern scientists now believe that the living things are just more complex than the non-living things.
Resources in a lake can change due to climate changes. Changes in climate may affect the survival, growth and reproduction capabilities of frogs and other amphibians. Climate changes greatly influence food availability, predator-prey relationships and competitive interactions which can alter community structure.
Changes in lakes can include other factors such as UV-B radiation and contaminants.These factors are complex and are causing some amphibian population to decline or even extinct.
Hence, as a result the frog population could exhibit a decline in population.
