Whose field experiment showed that on the rocky sea coast,the larger and competitively superior barnacle excludes the smaller barnacle?

Differentiate between Commensalism and Mutualism.

The praying mantis is a good example of which of the following?

American lakes visiting flamingoes and resident fishes compete for their common food $A$ in the lake. Resources $B$ limiting for competition to occur; in interference competition,the feeding efficiency of one species might be $C$ due to the interfering and inhibitory presence of the other species,even if resources (food and space) are abundant. Choose the correct option for $A$,$B$,and $C$.

Competition for light, nutrients and space is most severe between

Which adaptations have parasites evolved to exhibit parasitism?