Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
I think it would be D. Dominant
Answer:
inner core, outer core, mantle, crust
Explanation:
inner core is hottest
crust is coldest
Answer:
B. Case-Control
Explanation:
A case-control is a study that compares a group with an outcome of interest (cases) with a group who do not have the outcome (controls). This study aims to looks back retrospectively to compare how frequently the exposure to a risk factor is present in each group and with that to determine the relationship between that risk factor and the outcome.
So in this case, the cases are children with pervasive development disorder and the control is those without the disorders.
These studies are normally observational because no intervention is attempted.
