Observation, experiments, and scientific knowledge are the main parts of which process?

Wegeners theory of continental drift states that the continents have changed throughout history while the theory of plate tectonics

According to a recent survey, the local government wants to classify people according to their income earning capacity. they want to do so in order to provide special facilities for the poor. who among the four individuals will be classified as poor? a. joseph earns $2.25 per day b. maria earns $1.50 per day c. rosita earns $2.00 per day d. tim earns $ 1.00 per day

Read the article titled "castro resigns." why did the us impose trade sanctions against cuba in 1962?