Answer:
The third line of defence against pathogenic invasion is the adaptive immune response, which has two key qualities: It is specific (it can differentiate between specific microorganisms and respond accordingly) It is adaptive (it can produce a heightened response upon re-exposure - in other words, it has memory)
Explanation:
The digestive system works<span> very closely with the </span>circulatory system<span> to </span>get<span> the absorbed nutrients distributed through </span>your body<span>. The </span>circulatory system<span> also carries chemical signals from </span>your<span> endocrine </span>system<span> that control the speed of </span>digestion<span>. Hope this helps</span>
Answer:
The independent variable is allowed to change and the dependent variable is held constant to see what other conditions
Explanation:
the dependent variable is what is being tested therefore it is what remains constant unlike the independent variable.
Hope this helps. let me know if im wrong.