The American Automobile Association says that gasoline prices are they lowest they've been for this time of year since 2009, the average price for a gallon of gas was $2.66 on July 31.
Threats to Seagrasses: 1  Natural threats to seagrasses include storms, climate changes such as floods and droughts affecting water salinity, disruption of seagrasses by small predators as they search for food, and grazing by animals such as sea turtles and manatees.eagrasses may be confused with seaweeds (marine algae), but they are not. Seagrasses are vascular plants and reproduce by flowering and producing seeds. Marine algae are classified as protists (which also includes protozoans, prokaryotes, fungi and sponges), are relatively simple and reproduce using spores.
Threats. Overgrazing by livestock and plowing are the two greatest threats to temperate grasslands. Since the development of the steel plow much of these grasslands have been converted to agricultural lands because of their rich soil.About 47 percent of temperate grasslands have been converted to agriculture or urban development.he major temperate grasslands include the veldts of Africa, the pampas of South America, the steppes of Eurasia, and the plains of North America.