Τροφικές σχέσεις και ροή ενέργειας

The correct answer is "νεκρή οργανική ύλη" because it is the only option that refers to dead organic matter. The other options include "φυτοφάγα ζώα" (herbivorous animals), "σαρκοφάγα ζώα" (carnivorous animals), and "φυτά" (plants), which are not synonymous with dead organic matter.

The correct answer is "σαρκοφάγα ζώα" which translates to "carnivorous animals" in English. This answer is supported by the previous statement that the ecosystem is composed of "φυτοφάγα ζώα" (herbivorous animals) and "σαρκοφάγα ζώα" (carnivorous animals). Therefore, the correct answer refers to the animals that eat meat as part of the ecosystem.

The correct answer is "φυτοφάγα ζώα" because it means herbivorous animals, which refers to animals that primarily eat plants. The other options, "σαρκοφάγα ζώα" (carnivorous animals), "φυτά" (plants), and "νεκρή οργανική ύλη" (dead organic matter), do not accurately describe the eating habits of animals.

The correct answer is "οι παραγωγοί" which translates to "the producers" in English. This answer is correct because the question is asking for the primary source of production. "Οι παραγωγοί" refers to the individuals or entities that create or manufacture goods or services, making them the most appropriate answer in this context.

The correct answer is "φυτά." The given options are "φυτοφάγα ζώα," which means herbivorous animals, "σαρκοφάγα ζώα," which means carnivorous animals, "φυτά," which means plants, and "νεκρή οργανική ύλη," which means dead organic matter. Out of these options, "φυτά" is the only one that refers to plants.

The correct answer is "το 10% της ενέργειας." This is because the sentence in the question states that the energy consumption of the "περνάει" (translates to "passes") through the "περνάει" (translates to "passes") is equal to "το 10% της ενέργειας" (translates to "10% of the energy"). Therefore, the correct answer is that the energy consumption passing through the "περνάει" is 10% of the total energy.

The given options represent different types of agents in an economic system. "Καταναλωτές 1ης τάξης" translates to "first-order consumers" in English. First-order consumers are individuals or households that directly consume goods and services for their own personal use. They are the end-users in the economic system and do not produce or resell goods. Therefore, "καταναλωτές 1ης τάξης" is the correct answer as it represents the group of people who consume goods and services directly.

The correct answer is "τροφικό πλέγμα" because it refers to a complex network of interconnected food chains in an ecosystem. Unlike a food chain, which represents a linear flow of energy and nutrients from one organism to another, a food web or "τροφικό πλέγμα" shows the multiple feeding relationships and interactions among different organisms in an ecosystem. This concept is important in understanding the dynamics of energy transfer and the interconnectedness of species within a community.

The correct answer is 10.000 kg. This is because the given statement says "The weight is 100 kg" and asks for "how much is the weight". Among the options provided, 10.000 kg is the only one that matches the given weight of 100 kg.

The question states that the total weight is 20,000 kg and the weight of one carton is 2 kg. To find the number of cartons, we need to divide the total weight by the weight of one carton. So, 20,000 kg divided by 2 kg equals 10,000 cartons. Therefore, the weight of 10,000 cartons is 20,000 kg. To find the weight of 2 cartons, we divide the weight of 10,000 cartons by 10,000, which gives us 2 kg. Therefore, the weight of 2 cartons is 2 kg.