Edward Jenner inferred that a person who once had small pox cannot have it once again. So something is there in these persons which grows after the initial infection which interferes with the secondary infection resisting it.
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Explanation:</u></h3>
Edward Jenner is called the Father of Vaccination. Jenner noticed that the milkmaids who deal with the cows all the time don't generally suffer from the cowpox or small pox. Then as an Experiment, he took some sample from the pustules of the cow having pox and then cleaned it and injected the sample into a healthy child. Then when everyone of the locality suffered from the same disease, that child remained healthy. So that lead to infer that there are something in the pustule which lead to resist the secondary infection of this disease. So this lead to the invention of vaccines.
One way is by comparative anatomy. Comparing the similar bone structure of animals gives more proof of this theory. Also, the location of some animals compared to other animals of similar species is very convenient, and supports the theory of natural selection.
Answer: A community is all of the populations of different species that live in the same area and interact with one another. A community is composed of all of the biotic factors of an area. An ecosystem includes the living organisms (all the populations) in an area and the non-living aspects of the environment.
The solution for the problem is:
Since there is $120 deductible, you get to pay…$2345 - $120 = $2225.
But since the insurance covers 70%, so you will only pay the 30%, so it is:30% x 2255 =30/10 * 2225 == $667.50 would be the amount you will be paying.
Answer:
Scientists know that any response during an experiment is associated only with that cell type.
Explanation:
A cell culture is a group of cells that develops from a single original cell. Biologists can use cell cultures to test cell responses under controlled environmental conditions in order to study interactions between cells, and different processes occurs in it. Cell culture is one of the major tools used in the study of physiology and effect of toxic substances on the cells.
