Which of the following waves do not travel the same way or at the same speed through space as the other three? O A. the sound of a firecracker
OB. an X-ray in the hospital
O c. the red light at a stop signal
OD. the infrared signal from your TV remote control

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Select the correct answer from each drop-down menu proteins are