<p>Geology offers far better prospects than Biology as a major that would give you excellent employment prospects, pay and benefits when you graduate. However much of the demand for graduates with a Geology degree is coming from the oil industry. High oil prices are resulting in more exploration for new petroleum deposits and hence a need for more geologists. Some people have negative attitude towards this industry and would not want to be employed by it. I honestly do not know what prospects are in Environmental Geology but if you switch your major to Geoscience you have to understand that the resource extration industries are going to be where many of the jobs are.</p>