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 statement accurately compares the carbon content of the oceans to that of the atmosphere?
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 sequence describes effects of deforestation (biosphere) leading to consequent changes in the atmosphere, hydrosphere, and geosphere?
Soil fertility would decline if fungi were removed from an ecosystem as:
In an ecosystem, organisms that can prepare their own food using sunlight are known as _______________.
In a grassland food web, which of the following would most likely happen if the population of primary consumers such as rabbits dramatically decreased?
How does the atmosphere help maintain suitable temperatures for life on Earth?
Which sequence correctly matches each bacterium to its primary role in the nitrogen cycle: nitrogen fixation, nitrification and denitrification?
Which of the following methods is NOT applied for disposal of nonbiodegradable substances?
Which of the following isnotan adaptation for Xerophytes?
One horned Rhinoceros is a conserved species at:
Who amongst the following forms the first trophic level in an ecosystem?
Primary consumers are