Answer:
The placenta is the temporary association of fetus and maternal tissue. It is meant for nutrition and transport of different substances.
Explanation:
The placenta is a temporary association of fetal and maternal tissues. The placenta is formed from the trophoblast of the blastula. These trophoblasts form chorionic villi which later forms the placenta. The chorion and allantois also take part in the formation of the placenta. Hence, the human placenta is known as the chorioallantoic placenta. The process of formation of the placenta is known as placentation.
The placenta has several functions but the major function is to provide nutrition to the fetus. The developing fetus gets nutrition from the mother's body by the placenta. The placenta provided with blood vessels which help in the transportation of different substances. It also helps in gas exchange between the mother and baby. Thus it plays a vital role in fetal respiration. The metabolic wastes diffuse through the placenta. Placenta also stores fat, glycogen, which participates in protein metabolism.
Answer:
Phytoplanktons are producers
Squid are secondary consumers
Leopard seals are quaternary consumer
Explanation:
Phytoplanktons are producers because this are small plants that produce their own food by the process know as photosynthesis
Consumers are organisms that depends on plants for survival. They cannot produce their own food like plants. Fish are primary consumers because they eat plants. When Squids eat fish , squid is considered a secondary consumer because they eat the primary consumer.
Leopard seals are quaternary consumer because they are at the top of the food chain or the tertiary consumer. They eat the primary and the secondary consumer
Answer: The answer is crystallization
Explanation:
Answer: in the production systems of coal-burning power plants
