Which of the following would most likely be classified as an active volcano?
А)
a mountain that shows no history of eruption
a volcano that has erupted twice in the past 350 years
a volcano that is now an island with a population of 200,000
a volcano that erupted 12,000 years ago and is still connected to its magma
supply

'A volcano that has erupted twice in the past 350 years'. It's the shortest about of time and the most amount of eruptions.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.