Diagram 1 shows the fossilized remains of the lower portion of a camel's leg. each subsequent diagram shows the same portion of a camel's leg, but the diagrams are from progressively later time periods. diagram 4 shows the most recent fossil. these diagrams demonstrate oa. that fossils can show how a species changes over time. ob. that fossils show how species stay the same over time. oc. that modern camels have more toes than earlier species of camels. od. that all living organisms have increased in size over time.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.