Why can volcanic rocks occasionally contain fossils?
A) Lava does not melt bones.
B) Volcanic ash, if builds quickly enough, can preserve the remains of organisms.
C) Magma cools so quickly that fossils get trapped inside.
D) Organisms were often attracted to volcanoes and fell inside them by accident.
Question 2
Which statement about compaction is false?
A) Grains of sand are crushed into a smaller volume.
B) Spaces between grains are decreased.
C) Flakes of minerals are broken.
D) Compaction may be caused by the weight of overlying sediment.
Main Facial Bones
Discovering Fossils 16-30
Discovering Fossils 12-30
Although average brain size increases gradually though time in H. erectus, individuals with small br
Earth’s Oldest Preserved Rocks – 3.8 Billion Years Old, Greenland
Cranial Bones and Meninges