Man is the most intelligent animal. What could be the fact the helped us to reach such a conclusion ?

Man is the most intelligent animal. What could be the fact that helped us to reach such a conclusion?

What helps us to respond to such signals ?

What is the use of studying animal behaviour?

What is the use of leather of animals ?

A man in a car at location Q on a straight highway is moving with speed v. He decides to reach a point P in a field at a distance d from the highway (point M) as shown in the figure. Speed of the car in the field is half to that on the highway. What should be the distance RM, so that the time taken to reach P is minimum ?

Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows. Use the Table above to answer the following questions about metals A, B, C and D. (i) Which is the most reactive metal? (ii) What would you observe if B is added to a solution of Copper(II) sulphate? (iii) Arrange the metals A, B, C and D in the order of decreasing reactivity.

What is the use of animal wastes ?

Identify the given animal : What does it eat? Which part of the body helps it in eating?

The number of malarial patients in a village increases tremendously, when a large number of frogs were exported from the village. What could be the cause for it? Explain with help of a food chain.