I will start from left and go right (Moving up and down)
So it starts with the Cell the moves to the Nucleus, the structure next to there things is a chromosome, then the long spiral is DNA, and in DNA we have the gene, which contains instructions for a specific trait
Explanation:
The DNA contains many regulatory sequences that are very important, even though they do not code for proteins.
For example, the expression of every gene is regulated by a region called the Promoter. The promoter sequence, located close by the coding region of the gene, usually binds the RNA polymerase (the enzyme that transcribes genes into mRNA) as well as other proteins necessary for transcription,
The promoter sequence, thus, does not itself code for proteins, but is essential for transcription and must be highly conserved so that the RNA polymerase can find it.
Answer: A.prey
Explanation:
The prey is the resource for which the two different flea species in the same forest would likely to compete with each other. This is because of the fact that prey is the source of food which is the basic need required for the survival of both the flea species. Other needs like mates, space and hosts are secondary needs, the two flea species would probably survive without them. If the prey population is small then the competition among the members of the two different flea species will increase.
The niche of an organism is the functional role that it plays within an ecosystem. The niche (better refined as the 'ecological niche') is determined by the abiotic factors, which comprise of living features such as animals, plants and fungi, and biotic factors.
This is what I found on the internet hope it helps