Problem:OPTIONS:
- inhibition
- vasodilation
- accumulation
- vasoconstriction

Q: The thick tunica media allows muscular arteries to play a leading role in what? A:
****
A: vasoconstriction

Q: Vertebrates have evolved more complex digestive systems, with some species having multi-chambered types of what organ? A:
OPTIONS:
- respiratory
- skin
- heart
- stomach
stomach

Q: What change the physical properties of solvents? A:
OPTIONS:
- molecules
- cells
- chemical reactions
- solutes

Answer: solutes

Question: Q: What is the term for the average number of individuals in a population for a given area? A:
OPTIONS:
- result density
- population structure
- Area Density
- population density
Answer: population density

input with options: Q: What female flower structure, which is part of the pistil, receives the pollen grains and passes them to the ovary? A:
OPTIONS:
- sepal
- style
- ovary
- stigma
output: stigma

Problem: OPTIONS:
- hair
- warm blood
- laying eggs
- backbone
Q: Q: Vertebrates. from the smallest of fish to us. one of the main features we all have in common is our what? A:
Answer:
backbone