Problem:OPTIONS:
- filtration
- extraction
- precipitation
- diffusion

Q: What do you call the movement of a substance from an area of a higher amount toward an area of lower amount? A:
****
A: diffusion

Q: Living species of chordates are classified into three major subphyla: vertebrata, urochordata, and what? A:
OPTIONS:
- spirogyra
- invertebrates
- xerophyte
- cephalochordata
cephalochordata

Q: What 2 things keep polar bears warm in their arctic ecosystem? A:
OPTIONS:
- hibernation, thick fur
- colourful fur , blubber
- camouflage, blubber
- thick fur, blubber

Answer: thick fur, blubber

Question: Q: Name the organ located behind the nasal cavity in which both food and air pass through? A:
OPTIONS:
- medulla
- sinus
- diaphragm
- pharynx
Answer: pharynx

input with options: Q: What process can occur when atoms are exposed to high levels of radiation or when atoms transfer electrons to or from other atoms? A:
OPTIONS:
- fusion
- diffusion
- oxidation
- ionization
output: ionization

Problem: OPTIONS:
- fatty junctions
- solid junctions
- special junctions
- tight junctions
Q: Q: What can prevent the passage of molecules and ions between cells, such as in the blood-brain barrier? A:
Answer:
tight junctions