Which of the following statements is true? rainforest vines grow up trees to reach the upper canopy. this is an example of light competition. biologists believe that true parasitism in nature is very rare because not all hosts are harmed by the parasite. a tapeworm living in the small intestine of a human is an example of an ectoparasite. mutualism is the most important symbiotic relationships for evolution because both organisms must learn to work together.

Rainforest vines grow up trees to reach the upper canopy. This is an example of light competition.

Explanation:

Competition among plants is often refered to when plants are competing for resources, from water, to nutrients or light, this types of competition are often seeing in plants and examples of this are commonly found from plants with larger, deeper roots to plants with higher and higher canopies, trying to defeat other tall plants on the search for sun light.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".