Question

The dinosaur lived long ago on Earth in a tropical climate. Something caused all the dinosaurs on Earth to become extinct and scientists hypothesized that it was a change in climate: an ice age. If scientists are correct, what type of fossil would we find in the strata above the dinosaur fossil to support the fact that Earth experienced an ice age?
Responses
A
B
C
D
Question 2
As we move through the images, from A to E, we can see changes in the area depicted. All BUT ONE statement would be a valid conclusion about those changes.
Responses
A The area was covered with water during B and C; layers D and E are not.The area was covered with water during B and C; layers D and E are not.
B There was a geological event in image D causing the layers to tilt and life.There was a geological event in image D causing the layers to tilt and life.
C Weathering and erosion helped to cover the dinosaur with many layers of sediment.Weathering and erosion helped to cover the dinosaur with many layers of sediment.
D The climate change from tropical when the dinosaur lived to arctic after its death.The climate change from tropical when the dinosaur lived to arctic after its death.

Answer 1

For your first question regarding the type of fossil found in the strata above the dinosaur fossil that would support the theory of an ice age:

You would likely find fossils of cold-weather species, such as mammoths or other ice age fauna like saber-toothed cats, or you may find signs of glacial activity, such as glacial till or fossils of polar plants. These would indicate a shift to a colder climate.

Now for the second question about which statement does NOT constitute a valid conclusion about the changes depicted in the images:

- **A**: This statement is plausible, as it discusses changes in water coverage, which could be supported by different layers.
- **B**: This is also a valid conclusion, suggesting a geological event that caused tilting.
- **C**: This statement about weathering and sediment covering the dinosaur is likely true.
- **D**: This statement posits a climate change from tropical to arctic, which logically follows the scenario described in the first question.

Typically, none of these statements would be directly invalid, but if one must be chosen as less plausible in a general context, it may be **D**, as it could be too drastic a conclusion without specific evidence shown in the images (depending on what the images show).

If you have the actual images to analyze, that may change the specifics of the answer.