Mass transit systems reduce air pollution.
a. true
b. false

If a fungus a plant take up water and nutrients, that would be an example of which type of relationship? a. commensalism b. symbiotic mutualism c. predation d. parasitism

The distribution of related animals and plants across the world

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?