Answer:
The digestive system helps break down complex meals into the constituent parts the body can use: carbohydrates, proteins, fats, vitamins and minerals.
Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.
Explanation:
Answer:the answer is B hope this help
Explanation:
There are different trophic levels at each stage. Trophic levels determine the amount of energy at each stage of the food chain. For example, the energy is 100% at the producer (plant), so it's the 1st trophic level, and so on. Energy amounts decrease as you go up a food chain, and you rarely find more than 5 animals in one because there is not enough energy left for the 6th consumer
The endosymbiosis of the mitochondria created a cell that depends on the aerobic respiration orchestrated by the mitochondria itself, which made it possible to compose a group composed of relatively more developed episodes than those of the anaerobic species.
Aerobic respiration has a higher energy yield, and is less expensive in fuel (carbohydrates), which has allowed aerobic species to evolve over time.
