Which formation is the result of wind erosion?
a.
glacial erratics
b.
u-shaped valleys
c.
unusually shaped rocks
d.
mud slides

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates