Use the table to answer the question Day
Observations
1
Sunny and warm
2
cloudy and rainy
3
drop in temperature
4
clear skies and cold temperatures
A student tracks the daily weather. The student's observations are logged in the table. Which factor in the atmosphere best explains the student's observations?
(1 point)
A warm air mass replaced a coldair mass
A warm front moved into the area
High levels of moisture are contained within an air mass.
A cold front moved into the area

Iknow #2 is d. i just need to know why

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.