Which are required for natural selection to occur?

Need answers fast A student observes that it is hard to hear music underwater in a pool. They state that the sound is always muffled. They conclude that the speed of sound in water must be slower than in air.

During what kinds of processes are atoms and molecules rearranged? A. chemical B. physical

What advice should you give to a person exercising on a very hot day? Remember to wear lots of clothes so you can sweat off more weight! Take a lot of breaks, and remember to drink fluids! Don't drink anything, it will give you cramps.

Your ability to play the piano is regulated by the ... somatic nerous system, peripheral nervous system, limbic system, parasympathetic nervous system or medial nervous system?

The Aleutian Trench is an area where the oceanic Pacific Plate is converging with the continental North American Plate.

What are restriction enzymes used for in nature?

Material with bits of rocks and once living parts of animals are

Think about a flower growing in your garden you notice that all of the leaves are falling off why is this a problem for the plant

How does polymerase chain reaction make DNA fingerprinting more reliable

A) What are the bases of mRNA coded for by this section of DNA before the mutation? Hint in RNA A pairs with U.