I need help please answer what is the activity in 2053 if in 2017 was 25kBq and the half life is 12?

Aray diagram for a refracted light day is shown. what does the dashed line represent

The process in which the nucleus of an atom splits into two lighter atoms, releasing a large amount of energy is nuclear

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.