Species could compete for water, food, land, etc.
Answer:
retroviruses
Explanation:
Retrovirus have an enzyme known as reverse transcriptase which allows them to synthesize DNA from RNA going against the central dogma of life which is the synthesis of RNA from DNA. This phenomenon is called teminism.
Answer:
D. Nucleoid
Explanation:
As prokaryotic cells do not have any organelles, they use a nucleoid to store their prokaryotic DNA.
The bladder is the muscular organ that holds urine
