- <u>To science we owe dramatic changes in our </u><u>smug self-image.</u><u> </u><u>Astronomy taught </u><u>us that our earth isn't the center of the universe but merely one of billions of heavenly bodies. </u>
- <u>From </u><u>biology </u><u>we learned that we weren't specially created by God but evolved along with millions of other species. </u>
Why was agriculture the worst mistake in human History?
- Along with epidemic diseases, starvation, and malnutrition, farming also contributed to the creation of severe class distinctions.
- Hunter-gatherers rely solely on the wild plants and animals they catch each day, with little to no food stored and no concentrated food sources, such as an orchard or a herd of cows.
Was the agricultural revolution good or bad?
- Between 1700 and 1870, it is thought that both total agricultural output and output per worker increased by a factor of 2. 7 times.
- Britain's agriculture is the most productive in Europe thanks to the Agricultural Revolution, with 19th-century yields up to 80% higher than the continental average.
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completed question'
.....culturing viruses that requires a human host
Answer:
Diploid cell culture lines, developed from human embryos, are widely used for culturing viruses that require a human host
Explanation
Viruses can not thrive in a non-living host or artificial media.They are intracelular parasites which needed living host to replicate . Cultures lines from Human embryo in are therefore used for culturing viruses of human host, so that its mode of replication and gene expression can be studied, and therefore its virulence can easily be studied.
This method have the advantage that;
1.there is no need to make use of the whole animal rather,on a tiny tissue needed can be isolated for culture.
2. the cells growth is continuous,and can be preserved in liquid Nitrogen and renew for future culture
3. cells can be grown in different containers, with ability to decide the number of cells needed.
Temperature is kept at optimum for human in the culture at 37 degree centigrade, nutrients are provided, NaHC03 as buffers for C02, and the medium is humidified.
<h2>Answer:</h2>
The living cell concentration is hypertonic than outer solution hence the concentration of solutes will be higher than the solvent.
<h3>Explanation:</h3>
- In the question description it is mentioned that cell is present in the hypotonic solution than cell environment will be hypertonic.
- In the cell the solute will present in the concentrated form.
- Hence the water will move from the outer environment into sell through the osmosis.
- Osmosis is the movement of water from higher concentration to low concentration through semi permeable membrane.
- Hence the cell will swell due to water collection in cell.
If I were you I would choose muscles it seems right to me although I might be wrong. Hope this helped some! ;)
Pollen....because cones are absent in angiosperms.....flowers are absent in gymno....and seeds are also absent in gymno sperm........so and is pollen !
