Answer the following question given this paragraph: 27.8 Polarization Polarization is the attribute that wave oscillations have a definite direction relative to the direction of propagation of the wave. EM waves are transverse waves that may be polarized. The direction of polarization is defined to be the direction parallel to the electric field of the EM wave. Unpolarized light is composed of many rays having random polarization directions. Light can be polarized by passing it through a polarizing filter or other polarizing material. The intensity I of polarized light after passing through a polarizing filter is I = I 0 cos 2 , where I 0 is the original intensity and is the angle between the direction of polarization and the axis of the filter. Polarization is also produced by reflection. Brewster's law states that reflected light will be completely polarized at the angle of reflection b , known as Brewster's angle, given by a statement known as Brewster's law: reflected light travel and. Q: What type of light is composed of many rays having random polarization directions? Choices: - reflected light - polarized light - diffracted light - unpolarized light A:
unpolarized light
Answer the following question given this paragraph: Most protists also have a complex life cycle. The life cycle of an organism is the cycle of phases it goes through until it returns to the starting phase. The protist life cycle includes both sexual and asexual reproduction. Why reproduce both ways? Each way has benefits. Asexual reproduction is fast. It allows rapid population growth when conditions are stable. Sexual reproduction increases genetic variation. This helps ensure that some organisms will survive if conditions change. Q: The protist life cycle benefits by including what forms of reproduction? Choices: - asexual and biological - atypical and sexual - ideal and sexual - asexual and sexual A:
asexual and sexual
Q: Answer the following question given this paragraph: Early land plants also evolved a dominant sporophyte generation. Sporophytes are diploid, so they have two copies of each gene. This gives them a "back-up" copy in case of mutation. This was important for coping with the strong solar radiation and higher risk of mutations on land. Q: What does it mean to be a diploid organism? Choices: - yolk has two copies of each gene - taproot has two copies of each gene - micelles have two copies of each gene - organism has two copies of each gene A:
A: organism has two copies of each gene
Question: Answer the following question given this paragraph: Q: What do we call heated groundwater that erupts from the ground under pressure? Choices: - aquifers - spas - volcanic eruptions - springs or geysers A:
Answer: springs or geysers
*Question*
Answer the following question given this paragraph: Bacteria change nitrogen gas from the atmosphere to nitrogen compounds that plants can absorb. Q: What changes nitrogen gas from the atmosphere to nitrogen compounds that plants can absorb? Choices: - tumors - pathogens - viruses - bacteria A:
**Answer**
bacteria
(Q).
Answer the following question given this paragraph: Second, plant cells have a cell wall , while animal cells do not ( Figure below ). The cell wall surrounds the plasma membrane but does not keep substances from entering or leaving the cell. A cell wall gives the plant cell strength and protection. Q: What gives the plant cell strength and protection? Choices: - the protons - the cell nucleus - the genes - a cell wall A:
(A).
a cell wall