What is one of the newest techniques employed to measure tides? ...

[Mollykgkg]

What is one of the newest techniques employed to measure tides?
  a. simple drogues
  b. pressure-sensing transducers
  c. drift bottles
  d. satellites to measure Earth's magnetic field
  e. acoustic Doppler profilers

Question 2

One disadvantage of using tidal power is that it ____.
  a. has high operating costs.
  b. requires a large amount of man power.
  c. cannot sustain the world's needs.
  d. adds pollutants to the air.
  e. utilizes technology that is cost prohibive

[gcook]

Answer to Question 1

d

Answer to Question 2

c

[Mollykgkg]

Wow, this really help

[kusterl]

Thanks for the timely response, appreciate it