Let us assume that you are on the moon. If you try to focus sunlight on a paper using magnifying glass, does the paper catch fire? Or not Why?

Can we focus sunlight at a point using a mirror instead of magnifying Glass ?

Can we focus a sunlight at a point using a mirror instead of magnifying glass ?

Let us assume that you have lifted a suitcase and kept it on a table. On which of the following does the work done by you depend or not depentd? Why ? a) The path taken by the suitcase " " b) The time taken by you in doing so c) The weight of the suitcase " " d) Your weight

Would you be able to burn a paper using concave mirror ?

Can you filter mud water using a filter paper ?

How can you demonstrate condensation of water by using a glass water and pieces of ice?

Now in the same way, let us study a plant or a tree as habitat. Birds, monkeys, squirrels, snakes, ants, spiders, caterpillars, moths, bees, wasps, small plants (mosses), mosquitoes are some organisms that you may find on a-tree. Try to classify them in table 5 based on where you find them. Add some more examples that you know.

Compare the area of the folder papers with that of the roll. Do you find any increase in the area ? If so try to find out the reasons ?

Observe the following table. If red litmus paper is dipped in solution A, what Is the change that you observed ? Why ?

Often you may have experienced that if you have tension for some reason you start having loose motions . What does this show us ?