Answer:
b. It occurs in many non-silicate minerals
Explanation:
Silicate minerals -
The rocks made up of silicate groups are called the silicate minerals . Around 90% of the Earth's crust have silicate minerals .
The structure of silicate minerals , is the small tetrahedral silica are joined via oxygen atom to make - up the rock .
The atoms of the silicate minerals are strongly bonded together .
Structure of silicate is , as four atoms of oxygen connected to a silicon atom , present at the center .
Hence , the incorrect statement is - b. It occurs in many non-silicate minerals .
The amazon rainforest is located in the Tropical climate region
Answer:
c) case-control study is to odds ratio
Explanation:
The odds ratio (OR) was calculated in the association analysis, which is not necessarily the best option. The problem is that, when the frequency of the outcome is high, this estimator tends to show results away from the null hypothesis (estimator equal to one) compared to what is obtained when calculating a risk or incidence ratio (RR) in studies cohort.
Odds Ratio (OR) is a measure of effect commonly used to communicate the results of a health research. Mathematically, an OR corresponds to a quotient between two odds, an odds being an alternative way of expressing the possibility of an event of interest or presence of an exposure. From a methodological point of view, ORs can be calculated in prospective, retrospective and cross-sectional designs, and under certain conditions they can replace Relative Risk. Based on a series of questions and examples, this article explains the mathematical and methodological foundations underlying the concept of OR, in order to facilitate its interpretation to clinicians and researchers.
