<span>The answer is a certain required chemicals must be actively
transported. Blood brain barrier is a
selective membrane that separates blood circulating from the brain and the
fluid of extracellular in the central nervous system. This is also called a
filtering mechanism, the capillaries that carry blood to the brain and spinal
cord tissue blocking the path way of the certain substance.</span>
Answer:
X. Mechanisms and habits that include limit water loss.
Explanation:
Many mammals that live in dry ecosystems tend to have above adaptations because there is a shortage of water in these areas. And of course water is the most essential thing for survival.
Any condition in an experiment that can be changed is a control variable!!
You control it!!
The correct answer is Eukarya. I just had this question and it says the answer is Eukarya. Eukarya has DNA located inside of a nucleus, some have cellular membrane-bound organelles.
Hope this helps!
Give me the brainliest answer please!
