What type of erosion consists of a thin uniform layer of soil being eroded from a field

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

When elements that form a mineral dissolve in hot water, they form a mixture called a(n) a)geode b)vein c)evaporation d)crystallization e)magma f)lava g)solution h)gem

What type of plant is good for a bioassay and where can i buy it? i only have a month.