ecosystem

What is the relationship called when both organisms benefit from each other in a symbiotic relationship?

• Mutualism

• Predation

• Parasitism

• Commensalism

Which organisms are at the base of the ecological pyramid?

• producers, such as plants and algae.

• Fungi

• Animals

• Bacteria

The position an organism occupies in a food chain?

• Habitat level

• 'trophic level.'

• Species rank

• Ecosystem tier

What is the process by which cells break down glucose to release energy?

• The process is called cellular respiration.

• The process is called mitosis.

• The process is called photosynthesis.

• The process is called fermentation.

What are organisms that feed on dead and decaying matter called in the ecological pyramid?

• Predators

• Consumers

• Producers

• decomposers

What is the second trophic level in the ecological pyramid called?

• Secondary consumer

• The tertiary consumers

• The decomposer

• primary consumers

What gas is used by plants during photosynthesis?

• Oxygen

• Nitrogen

• Hydrogen

• Carbon dioxide

What gas is produced during cellular respiration?

• Carbon dioxide (CO2).

• Nitrogen (N2)

• Hydrogen (H2)

• Oxygen (O2)

What is the ultimate source of energy for almost all life on Earth?

• The Moon

• The Sun

• Fossil fuels

• Wind

The role of a bunny in a ecosystem?

• prey

• producer

• decomposer

• Herbivore