Is roentgenium a metal, metalloid, or nonmetal

Someone me with my drivers ed! * i’ll mark you brainliest + 15 free points * a horizontal line of painted across a lane of traffic is called a yield line. a. black triangles b. white triangles c. green diamonds d. white diamonds

The biome pictured above is found in areas such as kenya and south africa. the land is grass-covered with very few trees and gazelles and other grazers are common here. why does this biome have a low population of trees? a) large grazing animals destroy the trees. b) it is a deforested rainforest with poor soil. c) it has high temperatures and low precipitation. d) it has a long rainy season followed by flooding.

Why is it essential to operationally define the variables in a study?