Answer: Option D
Explanation:
Restrictive lung disease or disorder are the condition of the extrapulmonary, or parenchymal respiratory disease that resists the expansion of lungs.
This leads to decrease in the lung volume, inadequate ventilation and decreased lung volume and increased work of breathing.
It is also characterized by the decreased residual volume. In this case the amount of air is not expired out completely due to restrictive respiratory disorder.
Answer: Protozoa contaminate the water supply.
Some protozoa are parasites and cause diseases like malaria.
Protozoa have an important role in the food chain.
Protozoa are parasitic or free living single celled eukaryotic organisms. They are mostly found in water bodies.
Protozoa contaminate the water supply: Some of the protozoan species which are released from the human feces usually contaminate thee water, and causes waterborne infections in humans. Examples are Cryptosporium and Giardia. The infection occurs through drinking water or swallowing water from swimming pool.
Some protozoa are parasites and cause diseases like malaria: The Plasmodium is the genus belonging to the protozoan parasites. This malarial parasite is transmitted by female Anopheles mosquitoes to humans. The parasite multiply in the red blood cells causes symptoms like fever, anemia, flue, illness and may also cause coma and death.
Protozoa have an important role in the food chain: The protozoa species plays many roles in the food chain, they act as consumers, predators or prey, herbivores and decomposers. Their main function is to control the population of other species in the same habitat. They engulf small single celled bacteria, hence prevents excessive bacterial colonization act as predator. They also feed upon the algal species therefore, act as herbivores. They act as decomposers, as they feed upon the organic matter present in the bottom of the aquatic water body. They are the source of food for large worm and insect species.
East of the 100th meridian, the climate is humid continental in northern areas (locations above 40 north latitude), to humid temperate from the lower Midwest eastward to the middle Atlantic coast regions, to humid subtropical in the Gulf and south Atlantic regions.
Answer:
Leave is an important structure of plant body where food production occurs in the process of photosynthesis. In the leaves, small tiny pores called stomata are present on lower side of the leaf. These pores are responsible for the exchange of gases such as carbondioxide and oxygen. These stomata opens and carbondioxide is absorbed from the atmosphere and water from the soil. Both reactants combine in the presence of sunlight producing oxygen and glucose. Oxygen is released through stomata and glucose is stored in different parts of plant.
It is a marvel because of the fact that each separate arm has all of the organs necessary for survival. They can regenerate a lost limb and a lost limb can move on it's own, as well as regenerate a whole new starfish in the process of asexual reproduction.
