Question

question 1
based on the strata provided in the picture, which fossils represent the oldest species?
appearance of human skull
vertebrate species present
emergence of a winged species
transition to bony skeleton
simple aquatic species
vertebrate species
winged species
simple aquatic species
the human skulls

Explanation:

In geology, the principle of superposition states that in undisturbed sedimentary strata, the oldest layers (and thus the oldest fossils within them) are at the bottom. Here, the "Simple aquatic species" fossil is in the lowest - mentioned stratum compared to the others.

Answer:

Simple aquatic species