The instructions for making proteins come originally from a) rna. b) ribosomes. c) dna. d) amino acids.

The correct answer is C) DNA.

DNA ( deoxyribonucleic acid) is the genetic material of all life forms. It carries information in the form of nucleotide sequences. DNA is transcribed into mRNA ( messanger RNA), which is then translated into specific proteins. mRNA contains sequences in the form of codon ( a triplet code of nitrogenous base for specific amino acid)

As mRNA is transcribed from DNA. Thus, instructions for making proteins originally comes from DNA.

According to the Central Dogma, genetic information is passed in this order-

DNA→ mRNA→ Protein

vote read

explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.