Help I need help and fast cuz I gotta turn this in in like 54 minutes

(I hope these are right..)

1803: Dalton presented his chemical combination theory.?

1897: Thomson discovered electrons.

1922: Bohr earned the Nobel prize for his work on the structure of atoms.

1926: Schrodinger formulated the wave equation.

1803: Dalton presented his chemical combination theory

1897: Thomson discovered electrons

1922: Bohr earned the Nobel prize for his work on the structure of atoms

1926: Schrodinger formulated the wave equation

Explanation:

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?