sam6312:

ZoeyTan:

[quote=\"sam6312\"]
Dun be too depress, cheerup. But I am sorry to say that yeah it shud be matter occupies space and he shud not water the dead leaves. But guess wat? ur leaves question is correct!

then how about the oxygen one? and the toilet a)?

U didnt say that the stones make the plastic bottle heavier... Cus if u put plastic bottle the water will just float on the surface. Then, the oxygen wan... maybe can. There are alternatives to answers in PSLE espacially science, so dun worry go on and celebrate if u do not hav HCL 2morrow. Sad to say, I do.[/quote]o ok thanks

sam6312:

ZoeyTan:

i think my answers are totally wrong....

could u all see whether it is acceptable?

My answer: he should water the plant daily as with more moisture,decomposition can take place faster.

he could increase the number of holes at the lid so that more oxygen could enter the bin. with more oxygen, the rate of decomposition will be higher.

(i felt that it is totally wrong)....

another thing...about the forest one..what he is thirsty then the plants and fruits could nt be eaten that one... i wrote he could cover the leaves of the plant with the plastic sheet using the string.As the plant repire, it gives off water vapour through its stomato. As the water vapour condenses onto the cooler inner surface of the plastic sheet, it will become water droplets. The boy can drink the water droplets..

and another thing ...about the toilet...
i wrote as the plastic bottle occupy space, it will take up some space in the tank, therefore, lesser water is needed to fill up the tank

b) Solid occupies space..(it is wrong?i should write matter right?)

Dun be too depress, cheerup. But I am sorry to say that yeah it shud be matter occupies space and he shud not water the dead leaves. But guess wat? ur leaves question is correct!

then how about the oxygen one? and the toilet a)?

i think my answers are totally wrong…

could u all see whether it is acceptable?

My answer: he should water the plant daily as with more moisture,decomposition can take place faster.

he could increase the number of holes at the lid so that more oxygen could enter the bin. with more oxygen, the rate of decomposition will be higher.

(i felt that it is totally wrong)…

another thing…about the forest one…what he is thirsty then the plants and fruits could nt be eaten that one… i wrote he could cover the leaves of the plant with the plastic sheet using the string.As the plant repire, it gives off water vapour through its stomato. As the water vapour condenses onto the cooler inner surface of the plastic sheet, it will become water droplets. The boy can drink the water droplets…

and another thing …about the toilet…
i wrote as the plastic bottle occupy space, it will take up some space in the tank, therefore, lesser water is needed to fill up the tank

b) Solid occupies space…(it is wrong?i should write matter right?)

:celebrate: