Only bacteria can reproduce outside a host and bacteria are not dependent on a host
Answer:
i think its B
Explanation:
good luck and may the Lord bless you
Answer:
B) increased exchange surface provided by their membranes
Explanation:
Alveoli are tiny air sacs that are responsible for exchanging oxygen (O2) and carbon dioxide (CO2) in the lungs. Alveoli have elastic fibers in order to expand and recoil depending on the volume of air breathed in. The alveolar epithelial cells (pneumocytes) may adopt a shape that serves to increase the surface area of gas exchange. On the other hand, intestinal epithelial cells have microvilli, which are microscopic projections in the plasma membrane. Microvilli serve to increase the cell's surface area, thereby facilitating the absorption of nutrients and water.
The greenhouse is the cause of most climate warming and glacier retreat in the past 50 years, however, related causes like farming, burning fossil e.t.c are also causing glacier retreat
