In the early days of germ theory, contagious diseases were thought to be caused only by fungi or bacteria. In the 1890s, Dmitri Ivanovski filtered extracts from diseased tobacco plants and discovered that the disease could be transmitted to new plants through the filtrate. He hypothesized that something smaller than bacteria or fungi was responsible for the transmission of the disease.
Answers: 1
Other questions on the subject: Biology
Biology, 21.06.2019 19:30, tynasiaparks13
What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.
Answers: 1
Biology, 22.06.2019 03:30, noahslambeenie359
If assuming tasting ptc as a simple gene trait, what other genotype would you select to put in this missing genotype box that could result in this phenotype
Answers: 3
Biology, 22.06.2019 09:30, hjeffrey168
Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?
Answers: 1
Do you know the correct answer?
In the early days of germ theory, contagious diseases were thought to be caused only by fungi or bac...
Questions in other subjects:
Mathematics, 10.10.2021 06:40
Mathematics, 10.10.2021 06:40
Mathematics, 10.10.2021 06:40
Mathematics, 10.10.2021 06:40
Mathematics, 10.10.2021 06:40
English, 10.10.2021 06:40
