essays on plants

The Columbian Exchange The Columbian Exchange is the exchange of plants, animals, food, and diseases between Europe and the Americas. In 1492, when Christopher Columbus came to America, he saw plants and animals he had never seen before so he took them back... [ view article ]

Tag:animalsColumbian Exchangehemisphericalplants

2 Pages

20 Downloads

Words: 487

Are Viruses Living? Case Study: Are Viruses Living? Dear Students, You came to me asking a question that has puzzled mankind ever since we have discovered them. Are viruses alive? Are the chicken pox, flu, HIV, and H1N1 viruses living? They are among... [ view article ]

Tag:animalsbacteriaMicrobiologistorganismsplantsviruses

2 Pages

20 Downloads

Words: 487

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