Which of the following human activities would be expected to be the biggest contributor to air pollution? a. driving b. restaurant garbage c. aerosol cans d. nuclear weapons

What macromolecule is produced during translation? a. carbohydrate b. rna c. dna d. protein

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.

Why are current extinctions of concern to enviromentalists?