Which two of the following arrows show matter moving from a tertiary consumer to a decomposer

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

How are gene and protein sequences used to classify organisms?

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers