Biology, 17.10.2019 19:00 Pandorasbx2657
Abluefin tuna eats a sardine that has recently been feeding on plankton. the sardine has 1,000 joules worth of energy, but the tuna ultimately gains only about 100 joules. where does the rest of the energy go?
a. it is destroyed and cannot be recovered.
b. it is used for cell functions or transformed to heat energy.
c. it was used by the sardine as it tried to get away from the tuna.
d. it reverts back to the plankton that the sardine ate.
Answers: 2
Biology, 21.06.2019 19:40, wweghorst8275
Astudent drew the following flowchart to show the movement of nutrients. soil → roots → plants →? where does nitrogen go next? a. directly into nearby animals as nutrition b. directly into aquifers through condensation c. directly into the air through evaporation d. directly into nearby plants during fixation
Answers: 1
Biology, 22.06.2019 10:40, ari313
Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.
Answers: 2
Biology, 22.06.2019 20:00, Kiona3815
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
Abluefin tuna eats a sardine that has recently been feeding on plankton. the sardine has 1,000 joule...
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