Q: What travels 9.5 trillion kilometers a year? Choices: - Sound - electricity - air - light A:
light

(Question)
Q: What phenomenon sometimes causes harmful alleles to become fixed? Choices: - natural selection - competition - spontaneous mutation - genetic drift A:
(Answer)
genetic drift

Ques: Q: What is part of a cycle that holds an element or water for a long period of time called? Choices: - homeostasis - a ditch - a holding tank - a reservoir A:
Ans: a reservoir

(Q).
Q: What are the two types of endoplasmic reticulum? Choices: - thick & smooth - rough & thin - rough & thick - rough & smooth A:
(A).
rough & smooth

Ques:Q: The creation of a voltage across a current-carrying conductor by a magnetic field is known as what? Choices: - off effect - newton effect - show effect - hall effect A:

Ans:hall effect

Ques:Q: What is the name of the galaxy we live in? Choices: - Centaurus A - Andromeda - Bode's Galaxy - milky way A:

Ans:
milky way