Biosphere Review

Explain the concept of an energy pyramid in an ecosystem.

• An energy pyramid is a physical structure in an ecosystem that stores energy for future use.

• An energy pyramid is a type of food web that shows the relationships between different organisms in an ecosystem.

• An energy pyramid is a tool used by scientists to measure the amount of water in an ecosystem.

• An energy pyramid shows the flow of energy through different trophic levels in an ecosystem, with producers at the bottom and top-level consumers at the top.

Give an example of an abiotic factor in an ecosystem.

• Animals

• Rain

• Sunlight

• Trees

What is the difference between biotic and abiotic factors?

• Biotic factors are living, while abiotic factors are non-living.

• Biotic factors are inorganic, while abiotic factors are organic.

• Biotic factors are non-living, while abiotic factors are living.

• Biotic factors are found in non-living environments, while abiotic factors are found in living environments.

Describe a symbiotic relationship and provide an example.

• An example of a symbiotic relationship is the mutualistic relationship between bees and flowers, where bees pollinate the flowers and in return, the flowers provide nectar for the bees.

• The relationship between humans and tapeworms, where tapeworms provide essential nutrients to humans

• The relationship between lions and zebras, where lions hunt and eat zebras

• The relationship between sharks and remora fish, where sharks provide protection and remora fish clean the shark's skin

What type of climate is typically found in a tropical rainforest?

• Hot and wet

• Cold and dry

• Hot and dry

• Mild and humid

Explain the role of producers in a food web.

• Producers consume energy from other organisms

• Producers only provide energy for themselves

• Producers provide energy for other organisms in the food web.

• Producers have no role in a food web

What is the primary source of energy in most ecosystems?

• Wind

• Volcanic eruptions

• Moonlight

• Sunlight

How do decomposers contribute to an ecosystem?

• By providing energy to the producers in the ecosystem.

• By regulating the population of predators in the ecosystem.

• By hunting and consuming other organisms in the ecosystem.

• By breaking down dead organisms and organic matter, releasing nutrients back into the ecosystem.

What are some examples of biotic factors in a grassland ecosystem?

• Rocks and minerals

• Some examples of biotic factors in a grassland ecosystem include grasses, shrubs, trees, insects, birds, rodents, and grazing animals.

• Ocean currents

• Cloud cover

Describe the relationship between a predator and its prey in an ecosystem.

• Predators and prey have a symbiotic relationship where they both benefit from each other's presence.

• Predators and prey do not interact with each other in an ecosystem.

• Prey hunt and consume predators to maintain balance in the ecosystem.

• Predators hunt and consume their prey as a source of food, which helps regulate the population of the prey species and maintain balance in the ecosystem.