Answer;
The similarity between gills and lungs is that both are sites for gaseous exchange in living organisms.
Explanation;
Gills is a site for gaseous exchange in fishes amphibians at some stage in life; while the lungs is a site of gaseous exchange in mammals and other organisms such as reptiles.
They both serve to bring in oxygen in the living things body and the eliminate carbon dioxide from the body; process of gaseous exchange.
However, they differ in a number of ways; for example, lungs are internal while gills are external , lungs are developed to breath in oxygen from the air, while gills are developed to get oxygen from water.
Answer: A. Rangeland → Pastureland
Rangeland can be defined as biome, which is dominated by the growth of shrubs and grasses. These are found in grassland, woodlands , wetlands, shrublands and deserts. A rangeland can be used as pasture land. A pasture land can be any land used for grazing by wild and domestic herbivorous animals. The rangeland can be appropriately used as pasture land because it provides a substratum for the growth of large diversity of grasses, hence, can be used as land for grazing domestic animals like cattle sheep, cow and buffalo. Therefore, reduces the expense of commercially available fodder.
Mitochondria. This is where cellular respiration takes place.
Because the dog breeder selected the dog his chihuahua had to breed with to get the trait he wanted, the answer is B.
