Experiments have demonstrated that the "words" of the genetic code (the units that specify amino acids) are? -three-nucleotide sequences.
-nucleotide sequences of various lengths.
-single nucleotides.
-two-nucleotide sequences.

Identify the missing parts of the carbon cycle

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

The activity of the modern sample is 1.10 bq . how long does that measurement take?