How many chromosomes do daughter cells have after mitosis? A.
none
B.
twice as many as the parent cell
C.
half as many as the parent cell
D.
the same number as the parent cell

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

In which state was more than 100 billion tons of coal mined in 2005?