I think it’s the second one (duodenum)
Classification is a method of grouping things together based on common qualities. Animal classification is critical since it aids in the identification and naming of all species on the planet. Animalia, Chordata, Mammalia, Primata, Hominidae sapiens are the classifications for humans.
An experiment or survey must be controlled in order to receive accurate results.
In an experimental group, the independent variable is changed. But in the control group, the independent variable stays the same.
<span>it has a specific activation site for enzyme attachment</span>
effect is from the modification of land surfaces. Waste heat generated by energy usage is a secondary contributor.