Select one of the following habitats and set up a living community. You may use an area nearby to gather organisms or environmental factors for your habitat.
• freshwater aquarium
• woodland terrarium
marine aquarium
• desert terrarium
aqua-terrarium
.
Then, respond to the following questions and prompts in the essay box below using at least 300 words.
1. Indicate the habitat you chose.
2. What kinds of organisms does your habitat contain?
3. Describe at least three environmental factors essential to the survival of organisms in your habitat.
4. Study your habitat for several weeks to observe and record any changes. What changes occurred in your habitat
after a period of time?
5. What effect will these changes have on your habitat?

answer; ///i believe the answer your looking for is (ribosomes);

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.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: