A. True
"Charles Darwin is known as the father of evolution, but in fact Alfred Wallace, another British naturalist, was a co-discoverer of the theory- though Darwin got the most credit"
Parasite: Parasites are different from predators because parasites only take resources from one host, whereas predators eat many prey. A good example of this is the trematode parasite Schistosoma mansoni. An adult schistosome parasite lives inside of just one human host