Would a Common warthog starve in a greenhouse?
A greenhouse is an enclosed building in which plants are grown. The Common warthog is an animal that feeds on grasses, roots, berries, and small insects. Aphids, fungus gnats, and caterpillars, are common insects found in greenhouses.
The answer is no.

Was Elmo an original muppet character on Sesame Street?
Sesame Street started in 1969. Elmo first appeared on the show in 1980.
The answer is no.

Did the Beatles write any music in the Disco genre?
The Beatles were active from 1960 until 1969. Disco began to appear around 1972.
The answer is no.

Did Evander Holyfield compete in an Olympics hosted in the western hemisphere?

Evander Holyfield won a bronze medal during the 1984 Summer Olympics. The 1984 Olympics were held in Los Angeles, California. California is in the United States, which is located entirely within the western hemisphere.
The answer is yes.