Biology, 23.07.2019 02:30 juliagearhart9p229te
The ld 50 is a number scientists use in research to determine the dose of a toxin required to kill 50% of a population of organisms. biologists in louisiana have become concerned about cadmium levels in the water near new orleans, and the chance that frogs will die out. scientists have performed an experiment on bullfrog tadpoles in louisiana and the results are presented in the graph. the ld 50 for bullfrogs is reached a) at about 6 mg per gallon per day. b) at about 60% of surviving tadpoles. c) somewhere around 11 mg per gallon per day. d) somewhere between 2 mg and 3 mg per gallon per day.
Answers: 2
Biology, 21.06.2019 22:00
Actual age your first developed of age well comparison age refers to absolute age true or false
Answers: 1
Biology, 21.06.2019 23:00
Me . based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?
Answers: 1
Biology, 22.06.2019 02:30
Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil
Answers: 1
Biology, 22.06.2019 03:00
When mendel crossed a true-breeding short plant with a true-breeding tall plant all the offspring were tall. which term describes the gene for tallnes?
Answers: 1
The ld 50 is a number scientists use in research to determine the dose of a toxin required to kill 5...
World Languages, 10.12.2020 17:00
Mathematics, 10.12.2020 17:00
French, 10.12.2020 17:00
Social Studies, 10.12.2020 17:00
Biology, 10.12.2020 17:00
Physics, 10.12.2020 17:00
Mathematics, 10.12.2020 17:00
Mathematics, 10.12.2020 17:00
Social Studies, 10.12.2020 17:00
English, 10.12.2020 17:00
Computers and Technology, 10.12.2020 17:00