Q: Genetic diversity in a population comes from two main sources - sexual reproduction and what else? Choices: - radiation - education - pathogen - mutation A:
mutation

(Question)
Q: Some samples of matter appear to have properties of solids, liquids, and/or gases at the same time. this can occur when the sample is composed of many what? Choices: - turn pieces - large pieces - few pieces - small pieces A:
(Answer)
small pieces

Ques: Q: Cellulose is the main structural component of what part of the plant cell, and makes up over thirty percent of plant matter? Choices: - flowers - roots - proteins wall - cell wall A:
Ans: cell wall

(Q).
Q: Eight of the hottest years on record have occurred since what year? Choices: - 2002 - 1997 - 1991 - 1998 A:
(A).
1998

Ques:Q: Cancer develops when what process is unregulated? Choices: - metabolism - meiosis - cellular respiration - cell division A:

Ans:cell division

Q: At what temperature does solid water melt to a liquid? Choices: - below 32 degrees c - below 0 degrees c - above 32 degrees c - at temperatures above 0 degrees c A:
at temperatures above 0 degrees c