Why is uracil used in RNA rather than thymine?

What does cleavage mean for a rock

what is the role of the liver A it makes all four digestive enzymes B it makes nephrons C It produces urine D it produces bile

You will NOT find a cell wall in which of these kinds of organisms? A) plants B) animals C) fungi D) all of the above

What two substances are indicated by the cobalt chloride and the lime water tests? is it possible that other substances are produced when the candle burns?

What does the phrase "struggle for existence" mean

Enzymes are changed during reactions

Name the agents of pollination

Which type of fault-monitoring device is most like a carpenter's level? a. tiltmeter b. laser-ranging device c. creep meter d. satellite

The crystals that form in slowly cooling magma are

In the spring of 2010, there was a catastrophic explosion on an ocean oil drilling rig, causing millions of gallons of oil to be released into the Gulf of Mexico. Many organisms died due to the thick sludge in their habitat.