About 4,000 new species of marine animals were discovered in the last 2 years. What is the unit rate of discovery?(1 point)Responses1 species2,000 yearsStart Fraction 1 species over 2,000 years End Fraction2 years4,000 speciesStart Fraction 2 years over 4,000 species End Fraction4,000 species2 yearsStart Fraction 4,000 species over 2 years End Fraction2,000 speciesyear
1 answer
The unit rate of discovery is 2,000 species per year.