Suzy is examining a brass lamp. If brass is a mixture of copper and tin, what can Suzy conclude? A Brass is an impure substance composed of copper, Cu, and tin, Sn.
B Brass is a pure substance represented by the symbol B.
C Brass is a pure substance represented by the symbol Br.
D Brass is an impure substance composed of copper, Co, and tin, Tn.

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.

d. organisms have cells with different shapes and functions.

answer: um

explanation: find shelter

answer;

-vessels in the chest

the diagnosis of angina pectoris literally means "vessels in the chest"

explanation;

-angina pectoris is the medical term for chest pain or discomfort due to coronary heart disease.it is the chest pain due to an inadequate supply of oxygen to the heart muscle. the pain is typically severe and crushing, and it is characterized by a feeling of pressure and suffocation just behind the breastbone.

agina pectoris is caused by reduced blood flow to your heart muscle. the blood carries oxygen, which the heart muscle needs to survive. when the heart muscle isn't getting enough oxygen, it causes a condition called ischemia