Which of these is an environmental effect of building dams?

increased water temperature upstream

sediment builds up downstream

weed growth upstream

increased fertility downstream

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).