Which of the following was most likely not present in creating the amino acids of early earths water of the past?

a. sulfur

b. nitrogen

c. hydrogen

or d. ammonia

Sarah is making a scale drawing of a painting that is 48inches wide by 120 inches high her paper is 12 inches wide and 24 inches tall she decides to use a scale 1 inches equals 4 inches is this a reasonable scale

Acharreadas is a popular mexican thing where people display varying skills of horsemanship much like what events in the united states?

Which of the following mountain ranges is home to the largest mountain peak in europe? a. the carpathian mountains b. the caucasus mountains c. the balkan mountains d. the ural mountains select the best answer from the choices provided a b c d