A student drew the following diagram to model the structure of a community in a mangrove swamp. Which level is most likely to represent American
crocodiles?
O A. Level 3
O B. Level 4
O C. Level 1
O D. Level 2

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

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?

One of the purposes of transcription is to produce a sequence of bases that