Slugs can be very damaging pests in moist, shady gardens. They feed on the leaves of many plants, especially seedlings. Later in the season they can feed on ripening fruits and vegetables. Slugs are especially numerous during rainy seasons and in well-irrigated gardens. If slugs are abundant one year, it does not mean they will be as common the following season; the relative number of slugs in a given season depends on how moist the growing conditions are.
Fresh water occurs naturally on the earthâs surface â in lakes, ponds, ice caps and ice shields, glaciers, and rivers and underground as groundwater in underground streams and aquifers. Fresh water has low concentrations of dissolved solids and salts. Canadaâs fresh water resources represent 7 percent of the worldâs renewable fresh water. About 20 percent of the worldâ fresh water is found in Canada, but less than half of it is considered renewable. Most of the fresh water is in the form of fossil water in glaciers, underground aquifers, and lakes.
The Earthâs surface is 70% water. Of that 70% only 2.5% is drinkable, fresh water. Nearly 70% of that drinkable water is frozen in the icecaps of Antarctica and Greenland. The other 29% is locked in deep underground aquifers not accessible to humans. That leaves us with less than 1% of accessible fresh water on Earth. These sources come in the form of lakes, rivers, and precipitation run off. That means of all of the water Earth has, both fresh and salt water, only 0.007% is accessible for humans to drink. I thought that it would be an interesting idea for this issue to go over the largest sources of fresh water on the globe for our top ten list.