Biology, 09.09.2019 21:30 jade611135
Populations of amphibians, including frogs and toads, have been plagued by disease and high rates of deformity. a recent study investigated whether problems among the populations have arisen due to poisons from chemicals associated with agriculture. biologists from the university of florida collected local adult cane toads (bufo marinus) from more than 20 different locations. toads were collected from areas close to agriculture—both large-scale and small-scale farms as well as from suburbs located far from agricultural sites. at collection sites where 50–97% of the adjacent land was farmed, males showed high levels of feminization. feminized male toads were similar in color to females and had lower levels of testosterone and often had deformed gonads. these changes can lead to sterile males or changes in behavior that prevent mating from occurring. based on this study, what is the control group?
Answers: 1
Biology, 21.06.2019 22:30, lovemusic4
Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.
Answers: 2
Biology, 22.06.2019 00:00, luzinaustin
How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000
Answers: 1
Biology, 22.06.2019 06:00, maylindominguez
Which is an important function of normal flora? a. aid with bone marrow production. b. crowd out pathogenic bacteria. c. destroy digestive track pathogens. d. manufacture iron in the bloodstream.
Answers: 1
Populations of amphibians, including frogs and toads, have been plagued by disease and high rates of...
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