Q: Acting like drawstrings to close off the alimentary canal, what regulates the passage of material between compartments? Choices: - intestine - hamstring - uterus - sphincter A:
sphincter

(Question)
Q: What are chemical bonds between atoms of nonmetals that share valence electrons called? Choices: - electron bonds - ionic bonds - gravitational bonds - covalent bonds A:
(Answer)
covalent bonds

Ques: Q: The muscles in arteries and veins that are largely responsible for regulation of blood pressure are known as what type? Choices: - opposing muscles - vascular muscles - elongated muscles - smooth muscles A:
Ans: smooth muscles

(Q).
Q: Bony fish can live in either of what type of aquatic biome? Choices: - coral reefs or freshwater - oceans or estuaries - estuaries or saltwater - saltwater or freshwater A:
(A).
saltwater or freshwater

Ques:Q: Which country is formed by a hotspot along the mid-atlantic ridge? Choices: - finland - norway - Switzerland - iceland A:

Ans:iceland

Ques: Q: What allows the electrons to move in an electrochemical system. Choices: - conduction - mass - magnetism - conductor A:
Ans:
conductor