HELP Which of the following atmospheric conditions are needed to create the winds?

I. Air masses with different air pressures
II. Air masses with different temperatures
III. Air masses with equal humidity

I and II
II and III
I and III
I, II, and III

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

The production of cells during mitosis into specialized function is recombination or differentiation

Prior to the mt. st. helens eruption on may 18, 1980, satellite and topographic views of the volcano were captured. based on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m? question 9 options: 600 m 400 m 750 m 500 m