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• which organism gains energy directly from eating the krill? phytoplankton cod leopard seal zooplankton
  
• which statement best describes the relationship between activation energy and rate of reaction? increasing the activation energy can increase the rate of a reaction. reducing the activation energy can increase the rate of a reaction. increasing the reaction energy does not alter the rate of reaction. reducing the activation energy can decrease the rate of a reaction.
  
• people are able to hear footsteps because the sound made by a foot hitting the floor travels through the air to reach their ears.
  
• which of the following is not true about essential body fat? a. the human body would not function normally without essential body fat. b. essential body fat accounts for about 3% of men's total weight. c. the percentage of essential body fat is the same for both males and females. d. essential body fat is found in one's organs, bones, and muscles. please select the best answer from the choices provided. a b c d
  
• one way states can support a fair election process is tomake voting mandatory for all citizens.train poll workers adequately.allow only educated individuals to vote.require all citizens to vote in person.
  
• the graph shows that is translated horizontally and vertically to create the function . on a coordinate plane, 2 exponential functions are shown. f (x) approaches y = 0 in quadrant 2 and increases into quadrant 1. it goes through (negative 1, 0.5) and crosses the y-axis at (0, 1). g (x) approaches y = 2 in quadrant 2 and increases into quadrant 1. it goes through (0, 2) and (2, 3). what is the value of h? −2 −1 1 2
  
• the piecewise function h(x) is shown on the graph. on a coordinate plane, a piecewise function has 2 lines. the first line has a closed circle at (negative 4, 3) and goes down to a closed circle at (2, 0). the second line has an open circle at (2, 3) and goes up to a closed circle at (4, 5). what is the value of h(2)? −2 −1 0 3
  
• select the correct answer. the electric force between two charged vinyl balloons is 3.0 × 10-3 newtons. if the distance between them is 6.0 × 10-2 meters and the charge of one vinyl balloon is 3.3 × 10-8 coulombs, what is the charge on the other vinyl balloon? (k = 9.0 × 109 newton·meter2/coulombs2) a. 3.3 × 10-8 coulombs b. 3.6 × 10-8 coulombs c. 4.8 × 10-8 coulombs d. 6.0 × 10-8 coulombs e. 3.3 × 10-3 coulombs
  
• briefly explain how one process discussed in the excerpt compares with the earlier united states decision to participate in the spanish-american war.
  
• the ability to develop and use tools was first seen in early hominids. which of the following characteristics was the main factor that contributed to this ability?