I would say B.
A, umm, don't crash trains, that's bad.
C, Lillian is wondering how fast a train can go, not at what curve will it fall.
D, Lillian isn't wondering about the size of the trains, just the speed.
Answer:
Dogs to find people, DNA evidence to link someone to the crime and fingerprints
Explanation:
Listen to much forensic files
B is prey predator
C is parasitism
A is commensalism
Https://quizlet.com/17718770/chapter-8-aquatic-biodiversity-flash-cards/
Answer:B
Explanation: The movement of metals in earths core and earths rotation are the two processes involved in the formation of Earths magnetic field. Hope this helps!