Amicrobiologist wants to know if two fungal species compete for resources when grown together. she places a sample of one species next to me et species on a growth medium. on two separate growth media, she places each species separately as control. after 2 days she observes the growth rate of the species when grown together or when grown separately. this type of experiment is an example of: ob a natural experiment a. a mathematical model da manipulative experiment o can observation question 5 1 pts the following are mechanisms of evolution except ocnatural selection e none of the choices are correct ob genetic drift a sexual selection d. dihybrid cross