Which of the following is an indication that a planet may exist near a distant star?

Any sound above what db can cause hearing loss in human beings

What is true of sea slugs in these orders

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers