Photosynthesis & Cellular Respiration
Photosynthesis produces this sugar.
What is glucose? (O₂) and glucose.
What happens to carbon in fossil fuels when they are burned?
It is released into the atmosphere as carbon dioxide (CO₂).
These organisms make their own food using sunlight.
These organisms make their own food using sunlight.
This gas traps heat in the atmosphere and is increasing due to human activity.
What is carbon dioxide (CO₂)?
How could the loss of pollinators (like bees) collapse a food web?
Fewer pollinated plants → fewer fruits/seeds → less food for many animals → collapse.
Why is ATP important in cellular respiration?
ATP stores and provides energy for the cell.
What role do decomposers like bacteria and fungi play in the carbon cycle?
They break down dead organisms and release carbon back into the atmosphere or soil.
Organisms that break down dead matter and recycle nutrients.
Organisms that break down dead matter and recycle nutrients.
Burning fossil fuels increases these.
What are greenhouse gases?
What is one human activity that can cause food webs to collapse?
Deforestation, pollution, climate change, overfishing, habitat destruction, etc.
The organelle where photosynthesis happens.
What is the chloroplast?
How do fossil fuels affect the carbon cycle?
Burning fossil fuels adds extra CO₂ to the atmosphere.
Only about this percent of energy moves to the next level.
What is 10%?
This effect warms the Earth by trapping heat.
What is the greenhouse effect?
How could climate change cause a food web collapse?
What is changing habitats → species die → chains break?
Name both reactants for cellular respiration.
What are glucose and oxygen?
Why must nitrogen be “fixed” before plants can use it?
What is atmospheric nitrogen is unusable in its gas form?
This level has the most energy in a food pyramid.
What is producers/autotrophs?
Explain one way climate change affects ecosystems.
What is habitat loss / extreme weather / species decline / food chain disruption?
Why are decomposers important in food webs?
They break down dead things and recycle nutrients — without them, nutrients stop cycling.
This molecule is the energy currency made during cellular respiration.
What is ATP?
These organisms “fix” nitrogen so plants can use it.
What are nitrogen-fixing bacteria?
Explain why trophic pyramids get smaller as you move up.
What is energy decreases as heat/life processes?
Melting polar ice affects sea levels by doing this.
What is rising sea levels?
What is a keystone species?
A species that many other species depend on — if it disappears, the whole web collapses.