What causes global winds?
ocean tides
ocean currents
uneven heating of earth's surface
contrasting temperatures between night and day

Organisms are classified, or grouped into categories, based on similarities in their characteristics and/or evolutionary relationships. the study of how organisms are classified is known as

Which of these is not a nucleotide base found in dna?

Kudzu vines grow by climbing and wrapping around trees. trees covered by kudzu can die because they are starved of sunlight. what type of relationship exists between the trees and the kudzu growing on them?