Ques: Q: What helps represent age-sex structure of the population? Choices: - habitat chart - density graph - biome model - population pyramid A:
Ans: population pyramid

Ques: Q: When calculating impulse, consider the change in _______ of one of the objects in the collision? Choices: - sound - potential energy - velocity - momentum A:
Ans: momentum

Ques: Q: In humans, what is the first organ to form and become functional? Choices: - brain - liver - pancreas - heart A:
Ans: heart

Ques: Q: Changes in the color of the statue of liberty owe to oxidation-reduction reactions, or what simpler term? Choices: - copper - oxygen - immersion - corrosion A:
Ans:
corrosion