In plants, transpiration is a process which is inevitable but potentially harmful, because it can cause loss of water. Loss of water can lead to wilting and eventual death of the plant. Even a little stress can interfere with the plant's growth process.
But, at the same time, transpiration is necessary because of a number of reasons - the transpiration stream aids the processes of mineral absorption, water absorption, energy exchange, helps provide the plant with optimum turgidity, it helps the exchange of gases and so on.
Answer:
Natural selection results in evolution.
Explanation:
Natural selection is the separation of types of individuals in different environments, like geographical isolation. Due to this, the offspring will soon evolve and create a new species, known as evolution.
Answer:
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1) About 23 percent of incoming solar energy is absorbed in the atmosphere by water vapor, dust, and ozone
2) Approximately 1.225 kg/m³
(<em>D</em><em>I</em><em>S</em><em>C</em><em>L</em><em>A</em><em>I</em><em>M</em><em>E</em><em>R</em><em>:</em><em> </em><em>It </em><em>c</em><em>hanges with variation in atmospheric pressure, temperature and humidity.</em><em>)</em>
3) The moon's gravitational pull on the Earth is the main cause of the rise and fall of ocean tides.
4) WIND
The uneven heating of the atmosphere causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.
Hydroelectric energy would not be a good alternative energy source for a small island country like Great Britain. The UK has a large population of about 60-65 million people and a large industrial, so electricity consumption would be a problem. A lot of hydroelectric dams would be needed to serve the large population, and UK does not have a lot of major rivers that are suitable for dams