<span>The organisms in an ecosystem fills the energy role of producer, consumer, or decomposer.</span>
Animals use oxygen for cellular respiration.
Plants release oxygen during photosynthesis, but use it during cellular respiration.
Answer:
When HIV infects a cell, it first attaches to and fuses with the host cell. Then the virus uses the host cell's machinery to convert the viral RNA into DNA and replicate itself. The new copies of HIV then leave the host cell and move on to infect other cells.
Typical cervical vertebrae have several features distinct from those typical of thoracic or lumbar vertebrae. The most notable distinction is the presence of one foramen, in each transverse process. These transverse foramina encircle the vertebral arteries and veins.
The Texture And Look Of A Microscopic Object
