Practice Questions

TLS Online TPP Program

#Question id: 12576

Estimates of current rates of extinction

#Unit 10. Ecological Principles

Indicate that we have reached a state of stable equilibrium in which speciation and extinction rates are approximately equal.
Suggest that one-half of all animal and plant species may be gone by the year 2100.
Indicate that rates may be greater than the mass extinctions at the close of the Cretaceous period.
Indicate that only 1% of all of the species that have ever lived on Earth are still alive.

More Questions

TLS Online TPP Program

#Question id: 12678

#General Aptitude

The length of the diagonal of a square is ‘a’ cm. Which of the following represents the area of the square (in sq. cm.) ?

TLS Online TPP Program

#Question id: 12679

#General Aptitude

The diagonal of a square is 4√ 2 cm. The diagonal of another square whose area is double that of the first square is :

TLS Online TPP Program

#Question id: 12680

#General Aptitude

The perimeter of two squares are 40 cm and 24 cm. The perimeter of a third square , whose area is equal to the difference of the area of these squares, is

TLS Online TPP Program

#Question id: 12681

#General Aptitude

The difference of the areas of two squares drawn on two line segments of different lengths is 32 sq.cm. Find the length of the greater line segment if one is longer than the other by 2 cm.

TLS Online TPP Program

#Question id: 12687

#General Aptitude

If the diagonals of two squares are in the ratio of 2 : 5, their area will be in the ratio of

TLS Online TPP Program

#Question id: 12688

#General Aptitude

The perimeter of five squares are 24 cm, 32 cm, 40 cm, 76 cm and 80 cm respectively. The perimeter of another square equal in area to sum of the areas of these squares is :