Persons with infectious mononucleosis produce heterophile antibodies by the fifth day of the illness. a. true b. false

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity