Answer the following question given this paragraph: the distance light can travel in one year, 9.5 trillion kilometers. Q: What travels 9.5 trillion kilometers a year? Choices: - Sound - electricity - air - light A:
light
(Question)
Answer the following question given this paragraph: Q: What phenomenon sometimes causes harmful alleles to become fixed? Choices: - natural selection - competition - spontaneous mutation - genetic drift A:
(Answer)
genetic drift
Ques: Answer the following question given this paragraph: Part of a cycle that holds an element or water for a long period of time is called a reservoir . The ocean is a reservoir for water. The deep ocean may hold water for thousands of years. 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).
Answer the following question given this paragraph: There are two types of endoplasmic reticulum. They are called rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). Both types are shown in Figure below . Q: What are the two types of endoplasmic reticulum? Choices: - thick & smooth - rough & thin - rough & thick - rough & smooth A:
(A).
rough & smooth
Ques:Answer the following question given this paragraph: 22.6 The Hall Effect We have seen effects of a magnetic field on free-moving charges. The magnetic field also affects charges moving in a conductor. One result is the Hall effect, which has important implications and applications. Figure 22.27 shows what happens to charges moving through a conductor in a magnetic field. The field is perpendicular to the electron drift velocity and to the width of the conductor. Note that conventional current is to the right in both parts of the figure. In part (a), electrons carry the current and move to the left. In part (b), positive charges carry the current and move to the right. Moving electrons feel a magnetic force toward one side of the conductor, leaving a net positive charge on the other side. This separation of charge creates a voltage , known as the Hall emf, across the conductor. The creation of a voltage across a current-carrying conductor by a magnetic field is known as the Hall effect, after Edwin Hall, the American physicist who discovered it in 1879. 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:Answer the following question given this paragraph: Like other spiral galaxies, our galaxy has a disk, a central bulge, and spiral arms. The disk is about 100,000 light-years across and 3,000 light-years thick. Most of the Galaxy's gas, dust, young stars, and open clusters are in the disk. Q: What is the name of the galaxy we live in? Choices: - Centaurus A - Andromeda - Bode's Galaxy - milky way A:

Ans:
milky way