Hello there!
Let's take for example plastic, plastic would take a good while for it to decompose. It wouldn't make sense for it to be "food produce" because food does decompose very quickly. Wood could be the answer, but wood wouldn't take that long for it to decompose, all it could use is some constant water and rain, and then the wood would then give old and just decompose. But even thought that is the case, wood cuttings would be the answer.
Vegetable peels would not take a long time.Most likely, they are probably to fastest in this list above. So, based from your options, your correct answer would be (wood cuttings).
(option a) would be your answer.
I hope you found this helpful
D, light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving.
The density of a population of living organisms is usually measured in individuals on one square km. In here we have 50 earthworms on an area of 5 square meters, thus we have 10 earthworms on every square meter. In order to get to the result we need to see first how many square meters there are in one square km. One square km has one thousand meters of length and one thousand meters of width so:
1,000 x 1,000 = 1,000,000 km²
Since we established that we have 10 earthworms on every one square meter, we just need to multiply the number of square meters with the amount of earthworms on every square meter:
1,000,000 x 10 = 10,000,000
So we have a density of 10 million earthworms per square km.
