Q: Answer the following question given this paragraph: The half-life of titanium-44 is 60.0 y. A sample of titanium contains 0.600 g of titanium-44. How much remains after 100.0 y?. Q: Name the type of system that a jellyfish does not have? A:

Options are: (I). nervous (II). reproductive (III). hereditary (IV). circulatory
The answer is:
(IV).