Answer:
D it is taken in from the air
Explanation:
Carbon dioxide is in the air and plants use it to make food.
The correct option would be c.
Sunlight and carbon dioxide
Specialized cell junctions<span> occur at points of cell-cell and cell-matrix contact in all tissues.</span>
Answer:
An ecosystem consists of all the organisms in an area, the community, and the abiotic factors that influence that community. Ecosystem ecologists often focus on flow of energy and recycling of nutrients. Biosphere: The biosphere is planet Earth, viewed as an ecological system.