The image shows a ship using sonar to detect underwater objects. What two pieces of information must you have in order to calculate the
distance to an underwater object?
A. The wavelength of the sound waves
B. How long the sound waves take to reach and return from the
object
C. The speed of the sound waves in air
D. The speed the sound waves travel in water

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.

where is the diagram

wooden bowls

furniture

carts

wheels

pottery

hope i

-lavira: )

very positive impact on our industries in the west, sine they promoted settlement and increased the ways in which goods could be transported to market.