They were imported from China into the United States in 1881.
The first successful release was in Minnesota in 1916.
Hope this helps! :)
Explanation:
I think that if you use different methods that result in the same outcome <em>you </em><em>will </em><em>have </em><em>more </em><em>chances </em><em>of </em><em>getting </em><em>the </em><em>required </em><em>res</em><em>u</em><em>l</em><em>t</em><em>.</em><em> </em><em>This </em><em>is </em><em>because </em><em>you </em><em>don't </em><em>know </em><em>whether </em><em>one</em><em> </em><em>of </em><em>your </em><em>methods</em><em> </em><em>might </em><em>work </em><em>or </em><em>not</em><em>, </em><em>so</em><em> </em><em>having </em><em>many </em><em>of </em><em>them </em><em>help </em><em>you. </em>
Not sure if I'm correct or not but I hope this helps
The correct answer for question number 1 is A - eukaryotes are the name
for unicellular organisms that dominated earth up to the Precambrian
times.
The correct answer for question number 2 is C - the
greenhouse effect is related to the phenomenon of an increase in average
surface temperature known as global warming.
The correct
answer for question number 3 is D - the colourless and odourless gas
that is produced by the radioactive decay of Uranium-238 and is considered
to be a cancer-causing agent is Radon.
The correct answer for
question number 4 is B - Scientists can determine if oxygen existed in
Earth's Archean atmosphere by looking for oxidized iron in rocks.
Answer:
To observe the cheek cell,
-
Take a tooth pick use its blunt side to scrap inside the mouth.
- You will see some deposition on the blunt side of tooth pick, make a smear on the clean slide in the center using that tooth pick.
- Add a drop of methylene blue solution and place a coverslip, make sure that bubbles are avoided i.e. coverslip should be placed in the inclined manner.
- Remove the excess solution and observe it under the microscope first under 4X and then under 10X.
Observation:
- The cells observed are squamous epithelial cells. The small blue dots seen inside will be the bacteria from our teeth and mouth.
They are made of DNA so it's B
