Ambivalent sexism is a theoretical framework which posits that sexism has two sub-components: hostile sexism and benevolent sexism. Hostile sexism reflects overtly negative evaluations and stereotypes about a gender (e.g., the ideas that women are incompetent and inferior to men).
The Best Crops for Biofuel Production. Different crops are used for biofuel, including wheat, sunflower, soybean, and sugarcane. Biofuel production relies on energy crops grown in Europe, the U.S. and other places around the world. Alternative fuels are used to power vehicles and reduce greenhouse gas emissions.
The jury is still out on this one. Some people say the biofuels are better because the carbon dioxide they produce is taken up when new biofuels crops are grown. So, there is no net increase in carbon dioxide, which is a greenhouse gas. Other people point out that energy has to be invested into growing biofuels.