Question
What are the pieces of evidence used to support the theory that dinosaurs became extinct as a result of a comet impact about 65 million years ago? choose all that apply.
a) There is shocked quartz from this time.
b) There is a crater in Mexico that dates from this time.
c) There is a layer of soot that dates from this time, indicating widespread fires.
d) There are water layers in the deep ocean that show comet dust.
e) There is a layer of iridium (a rare metal) that coats the surface of Earth. The coating appears to have happened at this time.
f) A crater on the moon was found that matched a similar crater on Earth.
g) Iridium was found in trees of that age.
h) Cave paintings show evidence people of that time experienced the comet.
a) There is shocked quartz from this time.
b) There is a crater in Mexico that dates from this time.
c) There is a layer of soot that dates from this time, indicating widespread fires.
d) There are water layers in the deep ocean that show comet dust.
e) There is a layer of iridium (a rare metal) that coats the surface of Earth. The coating appears to have happened at this time.
f) A crater on the moon was found that matched a similar crater on Earth.
g) Iridium was found in trees of that age.
h) Cave paintings show evidence people of that time experienced the comet.