What groupings on the periodic table are made up of elements that react similarly? groups/families metals, nonmetals, metalloids periods series next question © ask for

Ineed with these last two questions: 1) what are two types of cold air masses that influence the weather in north america? name them and describe their humidity. 2) describe the motion of a cold air mass and a warm air mass and the weather you would expect at a warm front and an occluded front.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Which levels of government establish and implement educational requirements for minors