Q: Respiratory development in the embryo begins around week 4. ectodermal tissue from the anterior head region invaginates posteriorly to form olfactory pits, which fuse with endodermal tissue of the developing pharynx. an olfactory pit is one of a pair of structures that will enlarge to become this? A:

OPTIONS:
- anal cavity
- eye cavity
- fluid cavity
- nasal cavity

Answer: nasal cavity

Problem: OPTIONS:
- alloy
- solution
- compound
- mixture
Q: Q: The components of what keep their own identity when they combine and can usually be easily separated? A:
Answer: mixture

Problem:OPTIONS:
- middle latitudes
- highest latitudes
- polular latitudes
- lowest latitudes

Q: Which latitudes get the most energy from the sun? A:
****
A: lowest latitudes

Q: What structure of the body falls between cells and organs in complexity? A:
OPTIONS:
- muscles
- molecules
- proteins
- tissues
tissues

Q: If something is in the state of matter where it has both a definite shape and volume, then what state of matter is it in? A:
OPTIONS:
- gas
- plasma
- liquid
- solid

Answer: solid

input with options: Q: Crevasses are found in glaciers. how do these come about? A:
OPTIONS:
- rigidity
- man made
- god
- from movement
output:
from movement