Scientific laws describe natural relationships that have been tested repeatedly and are generally accepted as universal and true. Which of the following describes a scientific theory? please answer now its a quiz HELP!!!

Most crimes involve some evidence relating to the human body; for that reason, what related science is frequently used in forensic investigations? a)psychiatry b)physics c)botany d)biology

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

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm