As scientist have learned more about atoms, models of atoms have changed. one of the first atomic models was a solid ball, such as a marble. What are two limitations of using a marble to model an atom?

A. The model is much harder to see than a real atom.

B. The model is not made of commonly available material or objects.

C. The model does not show the true size of an atom

D. The model does not move or behave like a real atom.

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

Someone me with this: a mineral' is determined by its actomic structure.