Answer:
A to meet needs through collective effort
Explanation:
Picture as proof
Answer:
The right answer is D
Explanation:
They use carbon dioxide, water and sunlight to make carbohydrates. And the oxygen is just a byproduct. No real organic molecules are needed before.
Water is the main constituent on the earth surface. It is important for all living beings to survive. It is a transparent, odourless, colourless chemical substance. Water has vital role in atmosphere. It undergoes several cycles. In water cycle, water from rivers, lakes and streams enters the atmosphere through Evaporation. In evaporation the element or the compound in it's liquid state changes to gaseous state below the temperature at which the it boils. This is due to the high temperature. Due to high temperature the water from different water bodies enters the atmosphere in the form of vapours. In the carbon cycle, water exits the pore of leaves in plants by a process called as transpiration. Transpiration is a process by which the moisture is transferred from roots to the outside of the leaf whic
Therefore, In water cycle, water from rivers, lakes and streams enters the atmosphere through vaporisation. in the carbon cycle, water exits the pore of leaves in plants by a process called as transpiration. In nitrogen cycle, the water as well as dead organism moves nitrogen from the atmosphere into the soil.
Answer:
They speed up chemical reactions. Without them you wouldn't be alive. They break down macromolecules, and also lower the amount of energy needed for a chemical reaction to happen.
