Radium has a half-life of 1,620 years. How many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium?

A. 1,620 years

B. 3,240 years

C. 4,860 years

D. 6,480 years

the answer will be a) proteins i believe

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

not too sure but maybe in the hot springs.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.