Devon hasn't been able to get more than five hours of sleep a night for the last week. He is starting to get irritable and is having problems remembering things.
It is most likely that Devon is suffering from
A sleep deprivation
B. too much sleep
C. recovery sleep
D. sleep gain

This organism is not capable of performing photosynthesis. (horseshoe crab) true false

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

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d