What were scientist trying to do with dna in the 1970s?

*will mark brainliest* certain species of are now recognized as indicators of environmental pollution. a. lichen b. mushroom c. yeast d. none of the above

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

Which of the following are not included as modern mammals that evolved during the eocene epoch? primates artiodactyls perissodactyls none of the above