Which of the following is true of compasses? A. Compass magnets can only be deflected by electromagnets such as Earth's magnetic field
B. Compass magnets can be deflected by Earth's magnetic field or other permanent magnets
C. Compass detect fluctuations in convection in the mantle
D. Compasses always point toward geographic north
Science A P E X

B

Explanation:

D is wrong as the compass point toward the geographic south

A is wrong as it can be detected either by permanent magnet or magnetic field of earth

C is not from properties of compass

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.