In order to survive, all organisms must eat food. Foraging is the term we use to describe the behaviour of searching for food. The food that an organism eats can depend on the abundance of the food, and the amount of energy one can obtain from the food.
Sex, is another essential behaviour that organisms partake in, as it enables an organism to pass on their genes. It can be random, such as in humans, or cyclical such as in certain species of birds. The time an organism reproduces can depend on the availability of food which favors organisms which reproduces so that their young is born when food is most abundant.
Finally, sleep is something which is also essential for our survival. It restores our brains and allows us to function acutely for long periods of time. Some species sleep daily in short functions, while others can sleep for mother longer time such as polar bears and hibernation.
Food, sex, and sleep may be the three most essential skills we have to survive.
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Grade 4 A good general understanding of the required knowledge and skills, and the ability to apply them effectively in normal situations. There is occasional evidence of the skills of analysis, synthesis and evaluation.