Select the correct answer from each drop-down menu.
complete the statements about the nature of scientific knowledge.

among the different types of scientific knowledge, are likely to be modified or discarded most frequently. long ago, in the 1600s, scientists discarded the phlogiston theory because

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.