Seeds by Type. Find mixtures for your region, or for special uses such as dry areas, partial shade, attracting animals, low growing, and more. Over 75 choices that will bloom in the second year and for years to come. Over 110 choices for fast color, such as poppies, cosmos, sunflowers, zinnia, and many more. Help the birds, bees, butterflies & hummingbirds by planting wildflowers. Wildflower seeds native to your region.
Swamp gas is the common name for the hydrogen sulfide from decaying matter. In small amounts, hydrogen sulfide is relatively harmless. However, it becomes quite dangerous when present in large amounts, especially in confined spaces.
Nitrogen and oxygen are the only gases that exist in the dry atmosphere that have concentrations above one percent near the earth's surface. The third most abundant gas in the dry atmosphere is argon (Ar).Argon is also considered a permanent gas.The permanent concentration of Argon is just less than one percent (about 0.93% to be more exact).itrogen and oxygen are the only gases that exist in the dry atmosphere that have concentrations above one percent near the earth's surface. The third most abundant gas in the dry atmosphere is argon (Ar).