Aphenomenon of nature that has been proven to invariably occur whenever certain conditions exist is called

How do you transfer mrna into codons ? i'm so confused : (

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

What are examples of the plant life and animal life that can be found in each type of terrarium