4. Which statement explains how a lunar eclipse happens?
A. The sun casts a shadow on Earth.
B. Earth casts a shadow on the sun.
C. Earth casts a shadow on the moon.
D. The moon casts a shadow on Earth.
Other:

5. A student made a model of a lunar eclipse. Which change will he need to make to the model to change it into a model of a solar eclipse instead?
A. Move the moon closer to Earth than to the sun.
B. Move the moon between the sun and Earth.
C. Move the sun between the moon and Earth.
D. Move Earth between the moon and the sun.
Other:

Which of the following is an example of a tissue on the digestive system a.the stomach b.smooth muscle that lines the stomach c.nerve cells in the stomach d. enzyme molecules in the stomach

What is the difference between sex-linked traits and autosomal traits in humans? a. sex-linked traits can only be passed from fathers to sons, while autosomal traits can be passed on from both parents to offspring of any sex. b. sex-linked traits are passed on through the x and y chromosomes, while autosomal traits are passed on through the other 22 chromosomes. c. sex-linked traits only affect females, while autosomal traits affect both males and females. d. sex-linked traits refer to genes that are on the x and y chromosomes, while autosomal traits refer to genes on all 23 chromosomes.

Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the fetus. how would the discovery of the human genome contribute to this process?