What might cause a cold spell in the northern united states?
a the doldrums move south
b the subtropical high moves north
c the subtropical jet stream moves north
d the polar jet stream moves south

Which of the following claims does the author support the least

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

What does this experimental investigation lack