Teratogen College Essays Samples For Students

Psychology

Prenatal Development and Teratogens
Introduction
Several factors may negatively affect the development of the fetus such as maternal diseases and harmful environmental elements. These factors are referred to as teratogens that are believed to cause defects on the fetus and other complications after birth. There are cases when a female of very young age got pregnant because of radical lifestyle. For example, a 15-year old girl who is sexually active for two years and exposed to teratogen elements is likely to have an abnormal fetus development when impregnated. In order to avoid such it is important for young girls ...

1. Ecosystems.
(10 pts) Provide a review of the process of succession and trends in biodiversity, productivity, and nutrient cycling.
Ecological succession refers to the process of gradual change of the ecosystems. This is attributed to the fact that habitats do not remain constant and they keep changing over time. Succession is divided into two; there is primary succession and secondary succession. Primary succession refers to changes which occur on an environment that has never been colonized before, for instance, quarrying on land that has never been quarried before. Secondary succession on the other hand involves environmental disturbance ...

Teratogens are non-genetic factor present in the body of a human being that disrupt the normal fetal and embryonic differentiation and also the morphogenesis.Their effect are usually seen during birth and this children who are exposed to them in the utter will not be able to pass on the defect to their children.
The most common teratogens include the age of the mother.If the person giving birth is of old age, then the number of complications increases. Old mothers are prone to hypertension unlike the younger ones. The effects of the old age would lead low birth weights thus ...