Average temperature of thermal springs and deep sea hydrothermal vents exceeds (in $^{\circ} C$)

An organism which can tolerate a wide range of temperature is known as . . . . . . .

Which of the following factors collectively determine the percolation and water-holding capacity of soils,along with parameters like $pH$,mineral composition,and topography?

The salinity is ............ in hypersaline lagoons.

Which animals are most affected by changes in environmental temperature?

Which one of the following factors is biotic?