Why is it not possible to always have a controlled experiment

How are distant regions of the universe similar to space near earth

The American colonies said there should be no taxation without representation. In 1766, Parliament responded by passing the A. Declaratory Act. B. Stamp Act. C. Sugar Act. D. Townshend Acts.

The range of different electromagnetic waves is called the electromagnetic span.

Facts of igneous rocks

Essential amino acids cannot be made by humans and so we have to eat them in our diet. False True

What is the empirical formula for propene (C3H6) ?

Which substance, when dissolved in water, forms a solution that conducts an electric current

Room has a dimension of 10ft x 20 ft x 8 ft. What is the volume of the room in cubic yards if 1 yard = 3ft

Which of the following best describes a mixture in which ionic compounds are dissociated in solution? a. ion solution b. aqueous solution c. hydraulic solution d. hydrochloric solution

An iceberg has a volume of 8925 ft3. is the mass in kilograms of the iceberg?