What is the one characteristic, besides function and nucleotide sequence, that makes all the different types of RNA different from each other?

What food can provide the body with a quick source of the energy needed to carry out cell functions (a) whole grain bread (b) ground hamburger (c) vegetable oil (d) whole milk

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine