Найдите русские эквиваленты... a crystalline substance; are necessary for the growth and health; may be harmful ; certain foods are the best sources of each body requirement; resistance to infection;

sivuch - the largest representative of the family of eared seals. also known as the north sea lion of steller. like all members of the family, sea lions are animals with pronounced sexual dimorphism. the size of sexually mature males varies between 300-350 cm, and the mass ranges from 500 to 1000 kg. females are much smaller than males, their body length reaches 260 cm, and the average weight is 350 kg.

you can help them, without killing them, and if you find them, give them to the zoo, or feed them for a start as they eat a lot