Downforce - Airfoils. 1  The amount of downforce created by the wings or spoilers on a car is dependent primarily on two things... 2  The shape, including surface area, aspect ratio and cross-section of the device, and. 3  The device's orientation (or angle of attack).
Types of Seaweed. The simplest of the seaweeds are among the cyanobacteria, formerly called the blue-green algae, and green algae (division Chlorophyta), found nearest the shore in shallow waters and usually growing as threadlike filaments, irregular sheets, or branching fronds.
The most commonly eaten seaweed in this group is sea lettuce (Ulva lactuca). Most green algae are found in freshwater. There are approximately 5,000 species of marine green algae. Once washed ashore, seaweed seems to be nothing more than gooey, smelly, fly-infested garbage.However, as unpalatable as they might seem, seaweeds are, in fact, extremely important plants.ost green algae are found in freshwater. There are approximately 5,000 species of marine green algae. Once washed ashore, seaweed seems to be nothing more than gooey, smelly, fly-infested garbage. However, as unpalatable as they might seem, seaweeds are, in fact, extremely important plants.