A man is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds but himself in 8 seconds. Find the length of the train and its speed.

TLS Online TPP Program

#Question id: 12310

#Section 1: Ecology

Which of the following statements about evolution of behavior is correct?

TLS Online TPP Program

#Question id: 12287

#Section 1: Ecology

Food chains are sometimes short because

TLS Online TPP Program

#Question id: 12286

#Section 1: Ecology

Keystone predators can maintain species diversity in a community if they

TLS Online TPP Program

#Question id: 12285

#Section 1: Ecology

The principle of competitive exclusion states that

TLS Online TPP Program

#Question id: 12284

#Section 1: Ecology

The feeding relationships among the species in a community determine the community's

TLS Online TPP Program

#Question id: 10748

#Section 1: Ecology

Learning how much to study to earn an “a” in biology is an example of _____________.