Properties where reuse is complicated by the presence of hazardous substance from prior use are called .

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Which description best characterizes the motion of particles in a solid?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %