Answer:
1: Burning of fossil fuel
2: Deforestation
3: Waste disposal in landfills
Explanation:
Burning of fossil fuel is the one of the primary cause of increased level of carbon dioxide in air. Deforestation refers to uncontrolled cutting down of trees which in turn increases the level of carbon dioxide in air. Plants are the natural resources that remove the carbon dioxide from air through the process of photosynthesis. Waste disposals in landfills emits methane which is one of the greenhouse gas.
When you breathe air in your diaphragm tightens and moves downward. It also increases the space in your chest cavity causing your lungs to expand.The muscles in your ribs also help to enlarge your chest cavity. This causes your rib cage to pull upward and outward when you inhale. When you exhale the exact opposite happens.
Answer:
The answer for this question D
Explanation:
The long-necked giraffes can access more food, so they have a better chance of surviving to reproductive age.
Answer:
Energy Changes in Chemical Reactions
Chemical reactions often involve changes in energy due to the breaking and formation of bonds.
<h2>Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.</h2>