1. What differences can be easily seen between the two tanks?
Both worm tank and anti worm tanks compost amount has all decreased a few center meter , the leaf layer had also fall, but the leaf layer didn't decrease anything at all in the anti worm tank. They fall because of the amount of the compost has changed. But the worm tank's leaf layer has decreased few center meter. Worm tanks soil has increase a little, but the anti worm tank haven't increase or decreased anything.
2. Is this the result you expected?
Yes, because i think the worm tank has worms and because the amount of the leaf layer and the compost layer has decreased because the worms will eat the leaf layers and the compost layers, the anti worm tanks doesn't have any worms, but the amount of compost and leaf layer has decreased, i think it's because maybe some of the ants and some microbes, eaten them.
3. Why did the soil layer get bigger in the worm tank but not in the anti-worm tank?
Because in the worm tank there are worms, and the worms digest the foods from after they've eaten the leafs and the compost, and hen the matter will be a part of the soil.
4. In the worm tank, why did the compost layer get much smaller, but the soil layer only got slightly bigger?
it's because the worms has decompose some matter, which has made the soil layer only got slightly bigger, but the worms has eaten more leafs and the compost which has made the layer decreased, and the amount of soil will only increase a little is because, the worms doesn't decompose every single matter they have eaten, they will absorb part of the foods.
5. Why do you think the leaf layer remained much the same in both tanks (why didn’t it change much)?
Maybe it's because the animals which lives inside there, has eaten more compost than the leaves, because the leaves are harder to digest.
6. Even though there were no worms in the anti-worm tank, the compost layer still got a bit smaller. Can you suggest a reason for this?
i think it's because in the anti worm tank, there lived some ants and microbes, and the matter they composed won't be as much as the worms, which makes the anti worm tank's soil doesn't increase or decrease.