How do plants help maintain the carbon cycle by absorbing carbon dioxide from the atmosphere?
Plants convert carbon into sugar molecules.
In the carbon cycle, carbon moves between the atmosphere, living things, oceans and rocks. Green plants take in carbon dioxide from the atmosphere through the stomata of their leaves.
During photosynthesis, plants use sunlight and chlorophyll to combine this carbon dioxide with water, forming glucose (a sugar) and releasing oxygen: 6CO2 + 6H2O → C6H12O6 + 6O2. So the carbon becomes part of sugar molecules and enters food chains.
Plants do not release the absorbed carbon dioxide unchanged and do not store it as a gas in their cells. Urea is a nitrogen-containing waste made in the liver of animals, not a product formed by plants from carbon dioxide.
Hence, Plants convert carbon into sugar molecules.
Which sequence correctly matches each bacterium to its primary role in the nitrogen cycle: nitrogen fixation, nitrification and denitrification?
Which process is carried out by Azotobacter bacteria in the soil as part of the nitrogen cycle?
Soil fertility would decline if fungi were removed from an ecosystem as:
How can a persistent warmer atmosphere alter precipitation patterns within the water cycle?
A city is planned to replace a pond, grassland, and trees with a park featuring playground equipment, shrubs, and paved paths. Which of the following consequences best reflects the impact on the local ecosystem?
A city plans to build a landfill which is near a river and farmland to manage growing waste. Which strategy best protects the ecosystem while supporting urban development?
Which of the following pairs of articles does NOT represent nonbiodegradable substances?
Which statement accurately compares the carbon content of the oceans to that of the atmosphere?
Which sequence describes effects of deforestation (biosphere) leading to consequent changes in the atmosphere, hydrosphere, and geosphere?
Which process in the oxygen cycle directly adds oxygen to the atmosphere?