C. The presence of predators could cause natural selection because it would mean survival of the fittest.
1- B
2-B
3-C
4-B
5-A
6-A
I cant see the options for question 7, but here are the answers for 1-6. Hope they help!
Answer:Toothed whales do not make the long, low-frequency sounds known as the whale song. Instead they produce rapid bursts of high-frequency clicks and whistles. Single clicks are generally used for echolocation whereas collections of clicks and whistles are used for communication.
Answer: Equestrian: An Olympic sport in which competitors ride horses, male and female riders compete head top head against each other in eventing, dressage and show jumping disciplines.
