The average ofx1 , x2 and x3 is 25. Twice the sum of x1 and x3 is 40, what is the value of X 2

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#Question id: 12318

#Unit 10. Ecological Principles

The evolution of mating systems is most likely affected by

TLS Online TPP Program

#Question id: 12319

#Unit 10. Ecological Principles

Fred and Joe, two unrelated, mature male gorillas, encounter one another. Fred is courting a female. Fred grunts as Joe comes near. As Joe continues to advance, Fred begins drumming (pounding his chest) and bares his teeth. Joe then rolls on the ground on his back, gets up, and quickly leaves. This behavioural pattern is repeated several times during the mating season. Choose the most specific behavior described by this example

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#Question id: 12320

#Unit 10. Ecological Principles

Animals that help other animals of the same species are expected to

TLS Online TPP Program

#Question id: 12321

#Unit 10. Ecological Principles

Based on the intermediate disturbance hypothesis, a community's species diversity is

TLS Online TPP Program

#Question id: 12322

#Unit 10. Ecological Principles

Which of the following could qualify as a top-down control on a grassland community? 

TLS Online TPP Program

#Question id: 12323

#Unit 10. Ecological Principles

Which of the following is considered by ecologists a measure of the ability of a community either to resist change or to recover to its original state after change?