Question 1 (3 points)
(11.10_q1) which kind of wave brings us the suns energy thru the vacuum of outer space?

question 1 options:

sound waves

mechanical waves

electromagnetic waves

surface waves

question 2 (3 points)
(11.10_q2) what is the relationship between a reflected wave's "angle of incidence" and "angle of reflection"?

question 2 options:

those 2 angles add up to 180 degrees

those 2 angles are always equal

those 2 angle add up to 90 degrees

the "angle of reflection" minus the "angle of incidence" equal 45 degrees

question 3 (3 points)
(11.10_q3) electromagnetic waves can refract. refraction is how a prism separates white light into its individual colors. refraction occurs when light at a non-right angle goes into a new transparent medium with a different index of refraction and

question 3 options:

the transparent medium slows down the speed of light

the transparent medium acts like a lens and make an image seem bigger

the transparent medium acts like a mirror

question 4 (3 points)
(11.10_q4) mechanical waves are

question 4 options:

propagated by the motion of the medium particles

propagated by a good pr group

able to travel thru a vacuum

question 5 (3 points)
(11.10_q5) in a longitudinal wave, like a sound wave, the medium particles

question 5 options:

move back and forth perpendicular to the direction of the wave

move back and forth parallel with the direction of the wave

move with the wave all the way thru the medium

move in little circles

question 6 (3 points)
(11.10_q6) waves do not convey the medium particles which propagate them. but waves do carry 2 things. what are the 2 things?

question 6 options:

energy and information

mass and volume

protons and neutrons

question 7 (3 points)
(11.10_q7) which of the following is an example of frequency?

question 7 options:

10 seconds to complete 1 wave cycle

15 cm between wave crests

wave traveling at 5 cm/s

12 complete wave cycles in 1 second

question 8 (3 points)
(11.10_q8) the meeting of 2 wave crests in the same place and time is called "constructive interence" and it results in

question 8 options:

the absence of any wave

a huge wave, because the 2 waves multiply each other

a bigger wave because the 2 waves add together.

the answer is 1. photosynthesis. glad to

the african cheetah.

this species has a relatively low level of genetic

variation because the population was reduced to a small size approxi-

mately 10,000 to 12,000 years ago.

chapter   outline

24.1

genes in populations and the hardy-

weinberg equation

24.2

factors that change allele and genotype

frequencies in populations

24.3     sources of new genetic variation

population   genetics

24

until   now,   we   have   primarily   focused   our   attention   on   genes  

within   individuals   and   their   related   family   members.   in   this  

chapter   and   chapters   25   and   26   ,   we   turn   to   the   study   of   genes   in  

a   population   or   species.   the   field   of

population   genetics

  is   con-

cerned   with   changes   in   genetic   variation   within   a   group   of   indi-

viduals   over   time.   population   geneticists   want   to   know   the   extent  

of   genetic   variation   within   populations,   why   it   exists,   and   how   it  

changes   over   the   course   of   many   generations.   the   field   of   popu-

lation   genetics   emerged   as   a   branch   of   genetics   in   the   1920s   and  

1930s.   its   mathematical   foundations   were   developed   by   theoreti-

cians   who   extended   the   principles   of   gregor   mendel   and   charles  

darwin   by   deriving   formulas   to   explain   the   occurrence   of   geno-

types   within   populations.   these   foundations   can   be   largely   attrib-

uted to three scientists: sir ronald fisher, sewall wright, and j. b. s.

haldane.   as   we   will   see,   support   for   their   mathematical   theories  

was provided by several researchers who analyzed the genetic com-

position   of   natural   and   experimental   populations.   more   recently,  

population   geneticists   have   used   techniques   to   probe   genetic  

variation   at   the   molecular   level.   in   addition,   staggering   advances  

in   computer   technology   have   aided   population   geneticists   in   the  

analysis   of   their   genetic   theories   and   data.   in   this   chapter,   we   will  

explore   the   genetic   variation   that   occurs   in   populations   and   con-

sider   the   reasons   why   the   genetic   composition   of   populations   may  

change over the course of several generations

request for reexamination

i wish i could with all of them i can barley see the first one so here's the answer to the first one b