How long can you live without oxygen?

How is an environment able to support different varieties of organisms?

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.