Examine the annual average precipitation data of a biome What is most likely the identity of the biome, and why?

A. Grasstand: low monthly amounts of precipitation are unable to support the growth of large trees in the biome

B. Freshwater; large monthly amounts of winter precipitation increase the salinity of the water in the biome.

C. Desert plants are able to survive on less than 20 mm of precipitation each month

d. Deciduous forest, plants rely on more than 40 mm of precipitation each month

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.