The answer is operon. These set of genes are transcribed together because they share a single promoter and operator. Therefore they are transcribed into one mRNA and translated together. These genes are, therefore, expressed together at all times. Examples are the tryptophan and lac operons of Escherichia coli
90% of the available energy is lost in some form of heat, transferring light energy into different living organisms
The answer is d. atmosphere < leaves < roots < soil
The following chemical reaction, represents photosynthesis. Photosynthesis does not occur in an earthworm, a whale, or a rabbit. Therefore the answer is a rubber tree plant.
