Q: What is the phenomenon in which light and sound waves become circular at the point source of a barrier? Choices: - refraction - sonic wave - reflection - diffraction A:
diffraction

(Question)
Q: What is the position of rock layers and the relative ages called? Choices: - diffraction - metamorphism - bifurcation - superposition A:
(Answer)
superposition

Ques: Q: Triggered by changes in the environment, migration and hibernation occur as cycles on what temporal basis? Choices: - bi-annually - seasonally - monthly - annual A:
Ans: annual

(Q).
Q: What is the name of the two metalloids in the carbon group called? Choices: - titantium and copper - silicon and gold - silver and gold - silicon and germanium A:
(A).
silicon and germanium

Ques:Q: What is evolution that occurs over a long period of time called? Choices: - spontaneous mutation - introgression - catabolism - macroevolution A:

Ans:macroevolution

Ques:Q: What is the key issue in the small-population approach? Choices: - disease variation - genetic mutation - alternative variation - genetic variation A:

Ans:
genetic variation