Match the word with its definition. 4Points
distance

vector

motion

displacement

physics

a.
a quantity including two components

b.
a change in position

c.
the study of energy, matter, and their interactions

d.
the change in a position of an object between two points

e.
the length of a route between two points

E. Vector

C. Physics

B. Displacement

D. Motion

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms