What doesthe law of conservation of energy state

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

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele

What is the difference between a scientific hypotheses and a scientific theory?