Like dna, rna contains four nitrogenous bases. three of them are the same as those found in dna. the one that is different is called what?

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstate the theory of endosymbiosis using the models

This is a type pf behavior that animals are born with and them to survive

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above