#1 Grebe Pond Pond ecology is how life interacts in the water body. One factor that scientists observe is the amount of pond covered by aquatic vegetation. how_much_of_grebe_pond_is_cove radio button field How Much of Grebe Pond is covered with Plant life?Please Click the option that best fits your observation. 1 No Vegetation 2 Light Vegetation 3 Moderate Vegetation 4 Heavy Vegetation 5. Ice Covered Link (required) Last modified on Mar. 1st at 8:57am by Sandra Hagerman.