The part of the earth where life exists is made up of:

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

In a sea shore,the benthic animals live in sandy,muddy and rocky substrata and accordingly developed the following adaptations:
$(a)$ Burrowing
$(b)$ Building tubes
$(c)$ Holdfasts / peduncle
Match the suitable substratum against each adaptation.

An association of individuals of different species living in the same habitat and having functional interactions is

Scorpion, spiders, lizards, and rattlesnakes are inhabitants of:

In most animals,the metabolic reactions proceed in a $A$ temperature range (in humans,it is $37^{\circ} C$). But there are microbes (archaebacteria) that flourish in hot springs and deep sea hydrothermal vents where temperatures far exceed $B$. Choose the correct option for $A$ and $B$.