The introduction should involve a hook and something to persuade the reader to continue reading the paper. But only a couple sentences should do good.
Answer:
organisms that are best adapted to the environment they are placed in will survive long enough to pass on their genes to their offspring while other organisms will become extinct.
Explanation:
Every now and then an organism in a species will undergo a mutation in their DNA. This mutation could do nothing but it may also lead them to getting, for example, longer legs than their counterparts. This may help them survive longer than other organisms as this mutated adaptation may help them run faster away from predators. These organisms will probably be able to outlive their less fortunate counterparts and they can then pass on their genes to their offspring, who will then gain the same mutated genes which will help them live longer. This continues for generations with the organisms who don't have the more specialised adaptation dying out as they are not able to escape from their predators
Answer:
In order for "buying on the margin" to work in the long run, stock values have to rise.
Explanation:
For stock buying to work in the long run, stock values must rise. This is because it will be necessary to buy them within the concept of speculation, where the buyer and the investor have the hope that this action will generate profits. However, the risk of this type of investment is very high and, therefore, if the shares assume low values, they will not compensate for the purchase in relation to the venture's risk.