The upper part of sea water mainly contains

Mango trees do not grow in ........ .

Some animals can change their body temperature according to the ambient temperature,then they are simply . . . . . . .

Animals consuming only plant materials are referred to as:

Give one example for each of the following:
$(i)$ Eurythermal plant species: $................$.
$(ii)$ $A$ hot water spring organism: $................$.
$(iii)$ An organism seen in deep ocean trenches: $................$.
$(iv)$ An organism seen in a compost pit: $................$.
$(v)$ $A$ parasitic angiosperm: $................$.
$(vi)$ $A$ stenothermal plant species: $................$.
$(vii)$ Soil organism: $................$.
$(viii)$ $A$ benthic animal: $................$.
$(ix)$ Antifreeze compound seen in Antarctic fish: $................$.
$(x)$ An organism which can conform: $................$.

Life history traits of organisms have evolved in relation to the constraints imposed by which of the following?