What prevents the backflow of urine from the urinary bladder to the kidneys?
1. perista...
Answers: 1
Biology, 21.06.2019 19:30
Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers
Answers: 2
Biology, 22.06.2019 13:30
What is any method of measuring the age of an object or event in years, such as using atomic half-life?
Answers: 2
Biology, 22.06.2019 18:00
The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .
Answers: 1
Biology, 22.06.2019 20:00
Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?
Answers: 2
Mathematics, 30.09.2019 18:00
Mathematics, 30.09.2019 18:00
Physics, 30.09.2019 18:00
History, 30.09.2019 18:00
Biology, 30.09.2019 18:00
Mathematics, 30.09.2019 18:00
English, 30.09.2019 18:00
Chemistry, 30.09.2019 18:00