00:01
Hello students, answer to the first part of the question is that the given statement is false because fortage sewage is not fertilizer for the lake, it can actually harm the lake by introducing excess nutrients and pollutants.
00:15
Answer to the next part is option b i .e.
00:17
Plant determines the type of animals in the ecosystem as they provide the base of the food chain and habitat for many species.
00:26
Answer to the third part, we have to state whether the given statements are true or false.
00:30
The given first statement is false because warmer water holds less dissolved oxygen than cold water because the molecules are moving faster than in cold water and thereby allow oxygen to escape from the bottom.
00:45
The next statement given is true because the gravitational weight of all the water higher up in the lake presses down on the water deep in the lake.
00:56
The pressure allows the water near the bottom of the lake to be get cold without expanding and arising.
01:02
Because of the pressure, the water at the bottom of the deep lakes can be cold.
01:08
So, the statement is true.
01:09
The given next statement is false because increased growth of algae can actually harm fish by depleting oxygen level and creating toxic condition...