Using various resources such as your school Library or the internet and discussions with your teacher, trace the evolutionary' stages of any one animal, say horse.

Using internet and discussing with your teacher, trace the evolutionary stages of any one animal say horse.

Try to collect all the currently accepted meanings for the word 'species'. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand, and bacteria on the other hand.

If you could use any source of energy for heating your food, which one would you use and why?

Activity : Note the frequency of two-wheelers, three-wheelers and four-wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.