Answer:
tundra
Explanation:
because I've done this question
<u>Answer</u>:
The null hypothesis: the mean egg thickness is 0.2 mm 
The alternative hypothesis: the mean egg thickness is less than 0.2 mm 
In statistics, the null hypothesis states that there is no significant difference between the observed value and the mean thickness. The alternative hypothesis states is the opposite and states the scientist's "idea" behind the experiment. Here, it refers to the fact that due to DDT, the egg shell will be thinner compared to the mean value.
They change the air from water vapor (gas) to liquid water. This can produce clouds you see in the sky or dew or fogs.
Answer:
It must lose two electrons and become an ion.
Explanation: Hope this helps :)