If  Phi is fixed at 0º, then which of the following is correct 

a. Clashes occur at ALL Psi angles. 

b. Phi = 0º is physically impossible.

c. Clashes occurs at +10º to -130º

d. Clashes occurs at -90º to -180º

TLS Online TPP Program

#Question id: 11361

#Unit 10. Ecological Principles

Which of the following tends to stabilize predator-prey relationships?

TLS Online TPP Program

#Question id: 11362

#Unit 10. Ecological Principles

Within a trophic level, this term refers to groups of species that feed on similar resources and often have similar ways of life.

TLS Online TPP Program

#Question id: 11363

#Unit 10. Ecological Principles

Competition among individuals belonging to the same species is referred to as _________ competition.

TLS Online TPP Program

#Question id: 12109

#Unit 10. Ecological Principles

Niches of two coexisting species of pond snail of the same genus are likely to be similar, but not identical, because of which of the following?

I. Closely related species use similar resources.

II. Competitive interactions exist between these species. 

III.  Unlimited resources are available.

TLS Online TPP Program

#Question id: 12110

#Unit 10. Ecological Principles

Which of the following has the smallest biomass?

TLS Online TPP Program

#Question id: 12111

#Unit 10. Ecological Principles

Which of the following is a tertiary consumer?