Plz answer this asap no explanation needed answer both questions first answer gets brainliest

Will you chech and finish these for me, because i am stumped with them.

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Which branches of natural science include the study of an organism that lived 10 million years ago