Land Adaptations
Using your knowledge of skeletons and land
adaptations, put the subgroups of chordate animals in order of complexity
(reptile; jawless fish, mammal, amphibian, bony fish, bird, lancelet).

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.

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.

the answer is d. embryo