This might not be biology! need !
1. what positions are the sun, moon, and earth during a solar eclipse.
2.why do the sun and moon appear the same size as we see them on earth ?
a. the moon is farther from the earth than the sun is.
b. the sun is farther from the earth than the moon is.
c. they actually are the same size.
3.it is never safe to watch a solar eclipse with a naked eye.
a. true
b. false
4.when the moon passes through the earths shadow, there is:
a. a partial solar eclipse.
b. a lunar eclipse
c. a solar eclipse
5.an eclipse can happen every month
a. true
b. false
6.what causes the moon to appear red when there is a lunar eclipse (i have to write a sentence).

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils