Answer:
c) are greenhouse gases that contribute to climate change
Explanation:
- The CFCs and the HCFCs are fully and partially hydrogenated carbons and contains carbon and hydrogen and chlorine and fluoride and other volatile substance and being a component of the greenhouses gases like the methane.
- <u>These contribute to climate change and the greenhouse effects on the earth and this is due to the government have phased put the use of CFCs and though this gas has a short lifespan.</u>
1. Mutate
2. Are selected
3. Evolve
Answer:
Evacuate patients/residents according to their <u>physical</u> condition.
Explanation:
According to the procedures that should be taken in case of urgent evacuation, patients or residents should be evacuated according to their physical condition, meaning that certain patients/residents are prioritized. Patients/residents that are ambulatory (able to walk) should be evacuated first, followed by those that can be transported in a wheelchair, and lastly those that are bedridden, as they are the most difficult to transport (they have to be pushed in their bed, on a stretcher or carried with a blanket).
The natural grassland ecosystem is known for its relatively high net primary productivity and high trophic efficiencies compare to other types of ecosystem, many reasons are responsible for this and three of them are listed below:
1. Natural grassland are regionally adapted to survive environmental fluctuations and grazing pressure.
2. The diverse producer base of the natural grassland ecosystem results in a large number of trophic connections. This enhances energy transfer and reduces energy losses.
3. Nutrient cycling in the natural grassland ecosystem is very efficient and this contributes to the overall efficiency of the ecosystem. The recyclers in the ecosystem decompose dead organic matters and release the energy trapped inside them.
