Answer:
There are from 200-500 million alveoli (mean diameter = 200 micrometers) in adult human lungs
Explanation:
The epithelial cells of the alveolar septum are markedly thinned and the capillary network immediately beneath the epithelium is the richest in the body.hope this helps you :)
It helps classify animals according to their needs.
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Answer:
The t-test
Explanation:
<em>The researcher should use a t-test to compare the two means and check if they are significantly different from each other.</em>
In using the t-test, both null (H0) and alternate (H1) hypothesis are made such that:
Thereafter, the value of t is calculated and compared to its critical value on the table. The formula for calculating the t goes thus:
where, Y1 = mean of population 1, Y2 = mean of population 2, S1 = variance of population 1, S2 = variance of population 2, n1 = number of individuals in population 1 and s2 = number of individuals in population 2.
<em>At the end of the day, if the calculated t value is more than the critical value of t, the H0 is rejected and it shows that the two means are significantly different. Otherwise, the H0 is accepted and this shows that there is not significant difference between the mean of population 1 and that of 2.</em>
Answer:
it's BACTERIA
Explanation:
There are three widely recognized domains: Archaea, Bacteria, and Eukarya. Viruses lack many traits of living things so the majority of scientists do not classify them as living organisms.
The species of <em>Anthoxanthum odoratum</em> is an example of parapatric species.
- Speciation is a process in which a new species form from the existing species due to reproductive isolation.
- In parapatric speciation there is no barrier between the gene flow between similar species.
- In the parapatric speciation populations are adapted to different ecological conditions although the populations of the related species differ in terms of mutation, and due to the effect of drift.
- But they are connected by the random flow of genes between the neighboring organisms irrespective of the changes in their genetic and physiological form.
Learn more about speciation:
brainly.com/question/9288164