Organisms that have two different alleles for a particular trait are said to be

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

Reactants undergo chemical reaction to form products. this chemical equation represents one such reaction. the coefficient for one of the reactants or products is incorrect. which part of the chemical equation is incorrect?