Why are manatees venerable to environmental pressure 

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

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