Which is most likely the first invention that changed society so much?

a. the airplane

b. the steam engine

c. the car

d. the train

A student sees a bee on a flower. The student wonders how the bee finds flowers. This student is displaying the scientific attitude of

What is true of every water molecule?

A woman in her 20s has experienced a miscarriage at 10 weeks' gestation and asks the nurse at the hospital what went wrong. she is concerned that she did something that caused her to lose her baby.

The illegal poaching, trading, transporting, buying or selling something is known as what?

What does the cell membrane do? How do materials cross it?

In corn plants, plant height is controlled by one gene with two alleles how many alleles that control the trait for height are present in each cell nucleusof a corn plant

Why do continuous processes typically run 24 hours a day, seven days a week?

Which of the following best classifies most dietary fiber?

There are over 100 elements in the universe. In the earth's crust and upper mantle, which statement is most accurate about the elements found there? A) Carbon is in all compounds found in the earth.

Megan wanted to make some calcium chloride (CaCl2) for an experiment. She knew that for every 40g of calcium there would be 71 g of chlorine. Megan only used 20 g of calcium. Calculate how much chlorine would be in the compound.