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.
In the purest sense, no you cannot live without water. Your body is made up of an estimated sixty percent water and it is vital for life functions. You can live for approximately three to four days without water. However, when you are asking if you can subsist on anything else, many things that you might choose do in fact contain water. Other drinks, even sodas have water content, as do many fruits and vegetables. It is possible to get enough hydration from sources other than pure water, but not to survive without it entirely.
Habitat I needed more thing for it to let me answer
Competitive advantages of apple were;
Apple preferred Horizontal and vertical integration around its products instead of licensing it or making it open market or sharing the technology.
Easy to use- they focused on ease of operation and simple user interface.
Facility of plug and play so that non-technical users do not face any issues.
Uniqueness and innovation in enhancing consumer's digital life for example- Digital Hub- an advantage for consumers who were becoming entrenched in a digital lifestyle, using digital cameras, portable music players and digital camcorders and mobile phones.
Investment in R&D brought the key competitive advantage to apple.
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base