Frogs exchange gases through their skin and the lining of their mouths. This exchange of gases is referred to as respiration. During the larval stage in frogs development, it lacks functional lungs but they can take in oxygen through gills which are in process of metamorphosis.
The gills take in oxygen when water is being passed over them. Once lungs are mature, they lose their gills and are able to bring in oxygen through lungs.
They rely on lungs to breath when they are active and they need more oxygen than what skin respiration alone can provide.
Although they have oxygen, most of their respiration occurs through the skin.
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Algae and plants may look similar and belong to the same Eukarya domain, they don't belong to the same kingdom because they are simply different in many ways including in their behavior, structure and habitat. In totality, they differ in more ways than they are alike.
Plants are in the Kingdom Plantae, while Algae are in the Protista kingdom. Plants are multicellular, while most Algae are single-celled, although some can be multi-cellular.
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Th polluting oh the ocean is a big concern for people because the animals the some people depend on for food are being killed.
The correction is B.
The respiratory system is the one that is responsible for transportation of oxygen from the outside to the lungs and the reverse transportation of carbon dioxide from the body to the atmosphere. The muscular system is responsible for the contraction of muscles around the air passages during respiration. These two systems are negatively affected in asthma patients during respiration.
