Bidang biologi dan kemajuannya​

Which is an example of a decomposer? a. bear b. algae c. grass d. bacteria d bacteria

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled

Which of these is one of the nitrogenous bases in dna? a. proline b. leucine c. glycine d. thymine