Some fish, such as guppies, use most of their energy to reproduce early in life; thus, adult guppies remain small and more vulnerable to predation. Other fish, such as bluegills, grow larger and have their first reproductive event later in life. One likely disadvantage bluegills will face by having their first reproduction later in life is that:

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis

What's the waste product of electrons and pyruvate combining in fermentation?  

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.