Guide Questions: 1. What human activities may lead to imbalance in ecosystems?
2. How do human activities affect the balance of the ecosystems?
3. What natural events lead to the imbalance of ecosystems?
4. How do natural events affect the balance of the ecosystems?
5. Recently, Taal volcano erupted resulting to the changes of the surrounding
ecosystems. How does this affect the population of plants and animals in the
area?

a)mining

b)pollution

c)typhoon

d)volcanic eruption

e)hunting

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.