4. Which of the following systems does NOT represent a force pair? A When you push on a bike's brakes, the friction between the tires and
the road increases.
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B When a diver jumps off a diving board, the board pushes the diver up.
C When an ice skater pushes off a wall, the wall pushes the skater off
of the wall.
D When a boy pulls a wagon, the wagon pulls back on the boy.

c

Explanation:

the wall is remaining still and has no force to be able to much the skater

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

transformative rocks are the stones that emerge from the transformation of existing rock composes in a procedure called changeability, implies changing of structures. transformative rocks are shaped from alternate shakes that are changing a result of warmth or weight connected. one of this model is the earth developments that making rocks profoundly cover or crushed which will make the stones warmed and put under awesome weight. they are not softening but rather the minerals they are containing are changed synthetically that will shape transformative rocks. now and again different rocks are shaped when the others are near some liquid magma and getting warmed.