<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.
The more mutagens one is exposed to, the higher will your risk of developing a certain type of cancer be. For that reason, avoiding mutagens is a good way of minimizing your chances of developing different types of cancers that are related to lifestyle choices.
humans gain nitrogen into their bodies by vegitations and animals who eat vegitations.
Explanation: In some cases, the measurement may be so difficult that a 10 % error or even higher may be acceptable. In other cases, a 1 % error may be too high. Most high school and introductory university instructors will accept a 5 % error.
Answer:
Yes, Eukaryotes do possess a nucleus.