Natural pesticides originate from venom of animals [for example snakes], and plants [for example nicotine]. ... Chemicals taken from plants and animals create a much lower risk for humans and ecosystems because they are natural and are not harmful to the environment. ... For many years, pesticides have been used to aid plant resistance, cultural, mechanical and biological tactics in an incorporated pest management system to fight off against destructive pests. Pesticides can be toxic to man, animals and plants of improperly used. ... Many characteristics that had not been considered necessary ...

• Word Count: 941
• Approx Pages: 4
• Grade Level: Undergraduate

Scientifically, germs are defined as microorganisms like parasites, fungi, bacteria, and viruses, which can make us sick. But research has found that, in fact, we need a fair amount of the good ones to be healthy. Many bacteria are considered to be "good germs;" yes, some can cause illness, but ot...

• Word Count: 972
• Approx Pages: 4
• Has Bibliography
• Grade Level: Undergraduate

Subclass Pelobiontae includes one genus, Pelomyxa, large cells which lack almost every characteristic of eukaryotic cells except the existence of a membrane-bound nucleus; these cells' nuclei divide like bacterial nucleoids. ...

• Word Count: 3806
• Approx Pages: 15
• Grade Level: Undergraduate