1. Methods of pest control
... '. They are chemical messengers produced and released into the bloodstream by organs known as the endocrine glands. These include the testicles, the ovaries, the pancreas, the adrenal glands, the thyroid, the parathyroid and the thymus. These play a crucial role in helping the foetus to grow in the womb, in the development of the baby and young child, and in the sexual development of both male and female. Endocrine- ... conditions, an absence of natural enemies, or the biological complexities of the crop itself may prevent a focused attack on one pest only. The technique requires time, kn...
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- Approx Pages: 10
- Grade Level: Undergraduate