Differences between forsest ecosytem and greenhouse

Ecosystem (imagine a forest ecosystem) 1. Consists of many species of plants and animals 2. Genetic diversity is very high 3. The sunlight is the energy source for autotrophs and this energy drives all biological cycles 4. Food chains are long and complex 5. Ecological succession takes place in a natural ecosystem over the period of time 6. Natural nutrient cycling ensures maximum and efficient cycling of nutrients 7. Productivity is extremely variable and depends on the environment. In tropical rainforest productivity is very high, but in deserts productivity is very low

The correct answer is a. we know this because n (hap) + n (hap) = 2n (dip).

The speed of  sound:   sound travels  at different speeds depending on what it istraveling through. of the three mediums (gas, liquid, and solid)  sound waves travel the slowest through  gases, faster  through  liquids, and fastest  through  solids.