An Olympic bronze medal is made up of three elements copper, zinc. and tin. State the number of types of atom in the medal. Explain your answer. ltsss oo pttt

How can you tell the difference between rough er from smooth er?

Ascientific idea becomes valid when it is what?

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing