During the synthesis of messenger rna (mrna) from dna, how many strands of dna are copied to produce a single strand of mrna a. thousands b. hundreds c. two d. one

Woah this is middle school biology? I'm a college biochemistry major and this is something we only introduce at the end of the first semester. How wild???

Anyways, I believe that one of the two strands of the DNA helix is needed for mRNA to replicate the genetic code with DNA primerase. Other techniques require multiple strands but the transcription process only needs one so the answer is D. :)

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.