At the end of the winter they are most numerous in fresh water. they will cover surface of aquatic plants or poles and wooden borders of ponds. If you like to study them you can scrape the brown growth with a flat piece of plastic. you can also use a sponge. for the free living (plankton) species fine mesh plankton net is very useful.
Null hypothesis<span> are never accepted. We either </span>reject<span> them or fail to </span>reject<span> them. The distinction between “acceptance” and “failure to </span>reject<span>” is best understood in terms of confidence intervals. Failing to </span>reject<span> a </span>hypothesis means<span> a confidence interval contains a value of “no difference”.
Hope this helps. </span>
Hello Mlevintova, <span>Who first proposed the principle of the heliocentric theory, </span>Aristarchus of Samos was an ancient Greek astronomer and
mathematician who presented the first known model that placed the Sun at
the center of the known universe with the Earth revolving around it.
