Answer:
Prevents distortion
Explanation:
Double-pouring technique is used for casting, it prevents distortion of the material to be fabricated or the study model.
It ensures the study or fabricated model is firmly withheld, increasing the material life span, and can be used at extreme conditions.
This type of technique takes longer time to set than the single pour method as it gives the needed base to yeild the oral structures.
Answer:
Option B, Mammals and reptiles in the post-dinosaur age.
Explanation:
Adaptive radiation is mechanism through which species evolve very fast from common single ancestors. In simple words two different species are said to have evolved through adaptive radiation when they have descended from a single lineage. This is not the case with mammals and reptiles.
Generally in adaptive radiation, a species evolve when it faces new environmental challenges due to change of habitat or area. For example mammals have evolved from dinosaurs.
Hence, option B is correct
Answer:
false
Explanation:
"Empirical" means "based on observation or experience," according to the Merriam-Webster Dictionary. Empirical research is the process of finding empirical evidence. If there are flaws in the way that empirical data is collected, the research will not be considered valid.
The answer is A.) Troposphere, Stratosphere, Mesosphere, Thermosphere
