Bio accumulation of DDT lead to bird eggs with weak shells and non viable offspring. The lethal effects of DDT on birds was first noted in 1950; scientists discovered that earthworm was accumulating the DDT pesticide and that the robins that were preying on the earthworms were been poisoned. Further research revealed that the chemical cause thinning of the egg shell and production of non viable offspring. The chemical has since been banned in USA.
Answer:
plant cells, palisade mesophyll cell, spongy mesophyll cell
animals- mitochondria, ribosomes
Answer:
The answer would be C. An organism is able to better withstand a toxin!
Explanation:
This is most likely because if it is a beneficial mutation, it has an effect that allows the organism to better survive and thrive, and being able to withstand a toxin can definitely support survival and reproduction.
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After the forest fire,the burnt wood will be fertilized by microbes which consider as decomposer in the food chain.It doesn't olny decompose dead animals but also organic and inorganic resources.
Drug that demages capsule is used to treat viral infection because Curing a viral infection antibiotics are useless against viral infections. This is because viruses are so simple that they use their host cells to perform their activities for them. So antiviral drugs work differently to antibiotics, by interfering with the viral enzymes instead.
Antiviral drugs are currently only effective against a few viral diseases, such as influenza, herpes, hepatitis B and C and HIV – but research is ongoing. A naturally occurring protein, called interferon (which the body produces to help fight viral infections), can now be produced in the laboratory and is used to treat hepatitis C infections.
