This Is for today help!!

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

The genetic code is essentially the same for all organisms. based on this information, one can logically assume which of the following statements to be correct? a. dna was the first genetic material. b. the same codons in different organisms translate into the different amino acids. c. different organisms have different numbers of different types of amino acids. d. a gene from an organism can theoretically be expressed by any other organism. e. all organisms have experienced convergent evolution.

Why is the limitations on supplies of freshwater becoming an increasing problem despite the fact that we have desalination technologies