Introduction
The characteristics that make insects successful are jointed appendages, an exoskeleton and a segmented body (Star et a., 2015). Other features are the complicated life cycles of the insects and a waterproof cuticle and the existence of wings. The wings help the insect to fly and eventually take cover especially when under attack and as are result escape from harm. The wings help the animal to move in and between different habitats. The waterproof cuticle prevents loss of water from the insects.
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The exoskeleton helps to protect the insect from outside harm and ensure that the internal organs do not suffer injury from harsh environmental conditions. The insects have extraordinary adaptive characteristics that help them to acclimatize to any environment. As a result, one can find them in places with very harsh conditions. Some of the conditions can be very hot like in deserts or freezing places like Greenland and Antarctica. Furthermore, the jointed appendages help them in locomotion as it makes them flexible. Another is that they can fly and are small. The qualities give the insects a way of escaping from their predators (Weisser & Siemann, 2008).
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Because of their small size, they require minimal amounts of food, and they can stay in tiny spaces. The small size means that the insects need small amounts of energy also. Insects, unlike other animals, produce many offspring that increases their adaptability to various environmental conditions. The insects adapt quickly to changes in the environment and therefore they can service in almost all conditions as a result. Their genetic capability of rapidly adapting to the environment to the various insecticides increases their chances of survival in the environment and thus their success.
Giant insects would not be able to survive since they will not adapt to the environment quickly. Their large size would make them easy targets of both humans and other animals. Their chances of survival would, therefore, be minimal. They would additional need a lot of food to get enough energy for locomotion and other bodily processes.
References
Weisser, W. W., & Siemann, E. (2008). Insects and Ecosystem Function. Dordrecht: Springer.
Starr, C., Taggart, R., Evers, C. A., & Starr, L. (2015). Biology: The unity & diversity of life. Australia : Brooks/Cole.
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