Question

question 15 1 pts which statement is false about theories and laws? they can never change, even with new conflicting observations. laws do not explain why an event occurs. theories are based on many observations. laws are based on events that naturally occur in the world. question 16 1 pts the international system of units (si) is only used in the united states. true false

Explanation:

For Question 15: Scientific theories and laws can be revised or rejected if new conflicting evidence emerges. Laws describe what happens, theories explain why, both rely on observations, and laws reflect natural events.
For Question 16: The International System of Units (SI) is the global standard for measurement, used by nearly all countries, not just the United States.

Answer:

Question 15: They can never change, even with new conflicting observations.
Question 16: False