Ecology

An organism that does NOT eat other organisms to obtain energy because it can make its own energy!

• plant
• producer
• autotroph
• these are all correct

These 2 levels of ecological organization contain both biotic and abiotic factors

• population, community
• community, ecosystem
• organism, population
• ecosystem, biosphere

Why is nitrogen so important to living things?

• Nitrogen is part of the DNA inside of each cell that makes up ALL living things
• animals use the nitrogen they get from plants to make proteins, like blood 
• plants use the nitrogen they get from bacteria to make chlorophyll,  which is needed to absorb the sun's energy for photosynthesis
• all of these are correct

How is carbon ADDED to the atmosphere?

• combustion (burning fossil fuels) releases carbon dioxide into the air
• decay of living things releases carbon dioxide 
• carbon dioxide is released during cellular respiration
• all of these options are correct

Which type of interaction would describe the relationship between a barnacle attached to a whale that doesn't harm or hurt the whale, but the barnacle benefits by getting a free ride around the ocean?

• parasitism (+, -)
• mutualism (+, +)
• commensalism (+, 0)
• predation (+, -)

Basic unit of LIVING things

• atom
• cell 
• matter
• energy

A group of tissues working together to perform a job for the body. 

• organ
• organ system
• organelle
• organism

Which would be a limiting factor for a squirrel?

• Sunlight

• Acorns

• Frogs

• Rabbits

What is a herbivore?

• Organism that only eats meat

• Organism that eats both meat and plants

• Organism that only eats plants

How much energy is passed to each trophic level?

• 20%

• 10%

• 30%

• 90%