Cengage Learning
COVID-19 and Coronaviruses
COVID-19 = CO (corona) + VI (virus) + D (disease) =19 (the year the disease first appeared) NOVEL (unknown to scientists and never before infected human patients). A colorful nine-slide presentation details what is currently known about...
Curated OER
Forest Management ~ Diseases and Pests that Effect a Good Harvest Stand
The forestry presentation found here lists and describes a variety of tree diseases. A few unappetizing photos are included to show symptoms of some of these diseases, or the insects and fungi that cause them. If you have a class that is...