10.Conduction is the method of heat transfer in solids but not liquids and gases. Why? (1 Point)
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Conduction only happens when the object is a solid, because conduction happens in objects that are closely, with molecules that are closely packed together, and have a definite shape. Since, in liquids and gases, the shape is not definite nor do they have closely packed molecules., conduction does not take place in them

2,0894x10¹² tonnes of CO₂ in atmosphere

Explanation:

The total mean mass of the atmosphere is 5.1480×10¹⁸ kg. CO₂ is an important race gas in Earth's atmosphere because it is part of the carbon cycle.

405 ppm of CO₂ in atmosphere means 405 mg of CO₂ per kg of atmosphere. If the mass of the atmosphere is 5.1480×10¹⁸ kg:

In tonnes:

2,0894x10¹² tonnes of CO₂ in atmosphere

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