Which of the following represent positive feedback loops? (Select two.) Termites forage for plant, litter and waste, then bring it back to their mounds for use as buiping material and food. In doing this,
they create rich, moist soil around their mounds, which in turn promotes more plant growth. This creates more litter and waste as
plants shed and animals come by to graze/browse.
A zebra hears a noise and becomes frightened, so it runs away. Other zebras see this, assume there's danger, and run away as well.
Pretty soon, the whole herd is running,
An increase in the gazelle population causes an increase in the cheetah population, which then bring the gazelle population back
down.

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.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.