Or Part D
The Grand Canyon is made of sedimentary rock that contains fossils up to 1 billion years old. The
most commonly found fossils in the Grand Canyon are sea organisms (crinoids, brachiopods, and
sponges). However, several upper layers of rock contain terrestrial, or land-based, fossils, such as
dragonfly wing impressions and the footprints of scorpions, centipedes, and reptiles. What do
these fossils tell us about the evolution of the geosphere at the Grand Canyon?
ats

It tell us that aquatic environment changed into land environment.

Explanation:

These fossils tell us about the evolution of the geosphere from aquatic environment to land environment at the Grand Canyon because the presence of sea organisms which is only found in the sea. Millions of years ago there was a sea at the Grand Canyon that have sea organisms crinoids, brachiopods, and  sponges etc but with the passage of time all water removed from this area and this aquatic environment change into the land environment.

we would need to see the picture to answer it

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.