C. Helpful variations accumulate among surviving members of a species
<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.
Answer:
Explanation:
Algae, phytoplankton and zooplankton
Answer:Jupiter
Explanation:
is the largest of all the planets. It has a radius of 71,492 kilometers at the equator and a radius of 66,854 kilometers at the poles
the right answer is by diffusion across a capillary wall