N the summer, the polar jet stream is usually north of the United States. In the winter, the polar jet moves down, often past the place marked with an "X".

How will the weather at point X change as the polar jet moves from north of it to south of it?
A.
The weather will stay the same.
B.
It will get warmer.
C.
It will get cooler.
D.
The winds will change direction.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive