Q: In scientific investigations, descriptive statistics are useful for summarizing the characteristics of large what? Choices: - organisms - questions - tissues - samples A:
samples

(Question)
Q: Shark teeth likely evolved from the jagged scales that cover their skin, called what? Choices: - heterotroph scales - hook scales - pinworm scales - placoid scales A:
(Answer)
placoid scales

Ques: Q: Nuclear reactors use fission reactions to vaporize water, producing steam to drive a turbine and generate what? Choices: - light - oil - fuel - electricity A:
Ans: electricity

(Q).
Q: What happens to an animal's telomeres as it ages? Choices: - divide - lengthen - multiply - shorten A:
(A).
shorten

Ques:Q: The product of a wave's wavelength and its frequency is what? Choices: - trough - velocity - amplitude - speed A:

Ans:speed

Q: Nonmetal structures contain what type of bonds? Choices: - prevalent - polymeric - gravitational - covalent A:
covalent