The receptacle is: the structure which holds the pollen
the stalk of the flower
the female reproductive cell

Atomic nuclei of almost all elements consist of

What is the speed of an object at a given moment?

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?