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.
Horses need to lie down occasionally, and prefer soft ground for a nap.
Bones of the appendicular skeleton.
Possible Volcanic Vent
Although average brain size increases gradually though time in H. erectus, individuals with small br
Fossils as indicators of climate
Weak bones cause the spine to collapse over time