Which of the following is not a means of water erosion?
a. natural springs
b. rivers
c. streams
d. ocean waves

Which sequence of transformations on preimage ∆abc will not produce the image ∆a'b'c'? a. reflection across the line y = x b. rotation 180° clockwise about the origin followed by a reflection across the line y = -x c. reflection across the x-axis followed by a reflection across the y-axis d. reflection across the line y = -x followed by a rotation 180° counterclockwise about the origin e. reflection across the y-axis followed by a rotation 90° clockwise about the origin

How many countries have portuguese as a national language?

What man-made lake was created by the building of the hoover dam?