What do parasitism, predation, and commensalism have in common?

Which of the following descriptions of proteins are true? i. proteins can have different sequences of amino acids. ii. proteins can have different shapes. iii. proteins can have different numbers of amino acids. a. only i and ii are true. b. only ii and iii are true. c. only i and iii are true. d. i and ii and iii are all true. e. none are true statements

What is an animal that lives by preying on other animals

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field