An igneous rock has a coarse texture and is dark in color. How else can this rock be accurately described? Check all that apply.

intrusive
small crystals
cooled quickly
produced from magma
formed at Earth’s surface

Why are common names a problem for scientist?

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

What is the difference between a meteoroid and a meteor?