Sandstone.
Sandstone is a sedimentary rock - which is the only type of rock which can contain fossils.
Limestone
A fossil would most likely be found in sedimentary rocks
shale and sandstone
You would be more likely to pull out a white marble as there are no red marbles in the bag.
Most likely not.
in your bed
Probably, carbonateous fossil.
The most likely cause of weathering would be from windblown abrasive particles.
"Most likely" means "most favorable." If there was a bag of marbles with 6 blue marbles and 1 red marble, it would be most likely that you would draw a blue marble rather than a red, because there are more of them.
MOSQUITOS
sedimentary
shale and sandstone