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

3,240 years

6,480 years

4,860 years

1,620 years

Cassandra made a venn diagram to compare and contrast the two stages of cellular respiration. which belongs in the area marked x? energy is released. oxygen is used up. glucose is broken down. carbon dioxide is used up.

How is the carbon cycle related to global warming ?

In "the pig," what is the main effect that the piglet initially has on kibuka?