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There are a number of reasons for this such as:parents want some children to survive, and thus they have more. Parents want to have more children so that in the future they have a higher chance of some mo...

There are many options, but substitution is the one we will go through for this example first. Lets say you have 3x+4y = 10 and x+2y = 6In this case substitution would be easiest because you have a singul...

Many low income countries have tropical climates which make them a desirable place for people to travel. They may also have beautiful landscapes and different ecosystems to explore. Countries such as Indo...

Refraction is what occurs when light passes from one medium to another (for example, air to water) and because of the difference in the medium, the speed changes. This change in speed of light causes it t...

Read through all six very carefully. From the first read through, eliminate the scenarios and scenes which you have little to zero knowledge about, and those which you have no vague, but immediate ideas f...