Which one of the following is not a mammalian trait?
a. mammary glands
b. relatively larger brains than other vertebrates
c. a diaphragm
d. a four-chambered heart
e. live birth

b

explanation:

i think the answer is b

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation:

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.