Food Chains, Webs, & Trophic Levels
Ecosystem Cycles
Photosynthesis & Cellular Respiration
Climate Change
Ocean Acidification & Coevolution
100

series of steps in an ecosystem in which organisms transfer energy by eating and being eaten

What is a food chain?

100

the movement of carbon from the nonliving environment into living things and back

What is the carbon cycle?

100

the conversion of light energy from the sun into chemical energy

What is photosynthesis?

100

the process by which long-term trends such as temperature, precipitation, etc. change due to global/regional fluctuations

What is climate change?

100

the process by which ocean water pH drops over time, thereby increasing acidity and making it harder on marine life such as corals and shellfish

What is ocean acidification?

200
in the following food chain, it is the primary consumer: grass --> grasshopper --> robin --> snake

What is the grasshopper?

200

the process in which water changes from a liquid to a gas, especially from large bodies of water such as a lake

What is evaporation?

200

Original source of energy for photosynthesis

What is the sun?

200

the increase of Earth's temperatures, largely due to human activity

What is global warming?

200

the gas primarily responsible for ocean acidification

What is CO2 or carbon dioxide?

300

in a food web that consists of several food chains, this type of consumer eats a primary consumer

What is a secondary consumer?

300
the process where water vapor comes together and forms tiny droplets that stay suspended in the air

What is condensation?

300

carbon dioxide, water, and sunlight

What are the inputs of photosynthesis?

300

gases that trap heat in the Earth's atmosphere

What are greenhouse gases?

300

the compound that is the main component of coral and shellfish structures/shells

What is calcium carbonate?

400

the point at which a food chain, food web, or ecosystem comes into balance, as noted in the later months of the provided graph

What is equilibrium?

400

the process by which atmospheric carbon dioxide is fixed into a usable form by plants

What is photosynthesis?

400
oxygen and glucose

What are the inputs for cellular respiration?

400

trend in CO2 emissions as long as the global human population continues to rise

What is increases or increasing?

400
ancient bacteria that helped start making oxygen in Earth's atmosphere many years ago

What are cyanobacteria?

500

the way in which energy levels change as you go up a trophic pyramid and why this happens

What is a decrease due to heat loss?

500

the process by which animals produce and release carbon dioxide (CO2) to the atmosphere

What is animal respiration?

500

the second big step of cellular respiration; it takes place inside the mitochondria

What is the Krebs cycle?

500

the approximate level of atmospheric methane in parts per billion (ppb) in the year 2015

What is 1800 ppb methane? (Give or take 100 ppb)

500

the eon in which the Earth began to see oxygen in the atmosphere

What is Proterozoic?

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