Which of the following was a land dinosaur?
Triceratops
Pteranodon
Archaeopteryx
Ichthyosaur
The first life on earth came in water and evidences indicate that life orginated in one of the following eras
Who concluded that existing living forms sharesimilarities to varying degrees not only among them selves but also with life forms that existed millions of years ago ?
Which of the type of respiration probably arose first?
Industrial melanism was highlighted by