Answer:
Beaches have specific abiotic factors like sandy, rocky soil, high amounts of sunlight, strong wind, high salinity and changing tides. Despite these challenges many biotic factors survive, such as mangrove trees in tropical areas, and flat, sprawling succulents in sand dunes.
I think the cytoskeletal protein that helps a cell maintain its shape is actin.
<span>The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the lithosphere. </span>
Answer:
Type II cells
Explanation:
Type II alveolar cells are the round-shaped or cuboidal epithelial cells. These cells have a free surface with microvilli. The function of the type II alveolar cells is to secrete the alveolar fluid to keep the surface of the cells moist.
A mixture of phospholipids and lipoproteins is present in the alveolar fluid that serves as surfactant and reduces the surface tension of the alveolar fluid. The overall effect of the presence of surfactant in alveolar fluid is to protect the alveoli against collapsing during exhalation.
