Which statement describes the wave interactions in sound navigation and ranging (SONAR)? O A. Sound is transmitted through the water and diffracted by hard surfaces.
o
B. Sound is transmitted through the water and reflected by hard surfaces.
о
C. Sound is diffracted through the water and transmitted by hard surfaces.
о
D. Sound is diffracted through the water and reflected by hard surfaces.

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?