Which best describes bio geographic isolation? A- it always leads to the formation of new species
B- it cannot lead to evolution
C- it is a mechanism for evolution
D- it occurs only through geographical forces

The images show fossils of a modern bird and two extinct organisms (a tyrannosaurus rex and an archaeopteryx). based on the structure of the three organisms, it can be concluded that . the archaeopteryx and bird have wings, while dinosaurs have limbs. so, it can be concluded that .

Each hereditary trait corresponds to

A(n) is a molecule influences the way that a molecule reacts.