Standing beside a pond ecosystem for a long time and observe it what kinds of life struggle you see?— Write it with example.

One of the two persons of same height is standing inside a shop and the other person beside a glass window outside the shop. The second man observes his magnified image due to reflection in the glass of the window. What is the nature of the glass of the window?

Secretion of saliva seeing delicious food'- What kind of reflex action is it? Write you opinion about it.

Observe your surroundings carefully and write any three situations of your daily life where you can observe lines and angles. Draw the pictures in your note book and collect some pictures.

Some pieces of ice are placed in a glass tumble and kept in open air. Will you see a similar result as the second example given in the previous page? What is the similarity or difference between the two examples?

What kind of fringes do you expect to observe if white light is used instead of monochromatic light?

A long -sighted man can clearly see at any distance beyond 2.5 m . What kind of lens in his spectacles does require to read books placed 25 cm from his eyes?

What is the relation between the camel's ability to withstand extreme water loss with the structural change of their RBC. Write the relation of behavioural adaptation of chimpanzee with their struggle in life.

What do you mean by accomodation? Give an example of it, how it helps in real life.