Which is not true about the upper paleolithic period?
a.
people made tools by chipping flint pebbles into blades and scrapers that had sharp edges.
b.
humans and animal forms begin to be seen in art.
c.
the period took place between 40,000 and 4,000 bce.
d.
in cave art, artists used the cave’s irregularities to create images.

b

Explanation:

nativists tried to get rid of the immigrants as they thought they were going to ruin the u.s.  

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on