Question: If carcinogens cause production of mutations in DNA of areas such as lungs, then what cause production of mutations in DNA of areas such as lungs? Answer choices: - Damages them - the environment - carcinogens - cigarettes - rays or beams - smoking tobacco - smoking - Pollution
Answer: carcinogens

Question: If flagella help bacteria move, then flagella help what move? Answer choices: - graptolites - bacteria - fish - fungi - allow growth - Most plants - organelles - nuclei
Answer: bacteria

Question: If planting trees has a positive impact on forests, then what has a positive impact on forests? Answer choices: - genetic diversity - some invertebrates - planting trees - food and shelter - lowered energy cost - extinction of species - logging - canopy removal
Answer:
planting trees