Poisonous and toxic gases can be released
or the water that was evaporated could have pullution in them and stored in clouds
I is Nucleus, and H is Cell Membrane
1 is D
2 is C
3 is A
4 is B
5 is A
6 is D
7 is B
8 is C
9 is asexual reproduction
10 is sexual reproduction
Physical resources that are extracted from the ocean and are useful to humans include petroleum and natural gas.
<h3>What are physical resources?</h3>
- Physical resources are tangible items such as raw materials which are required by the humans for their need.
- Water, air, soil, rocks are all physical resources of the terrestrial and aquatic ecosystems.
- Land, water and air are necessary for our survival.
- Geological features like volcanoes, caves and fossils are also a part of physical resources.
- The dead and decaying remains of plants and animals over thousands of years in the oceans (marine system) form petroleum and natural gas which are used as fuels to power vehicles.
- Coal is obtained from the remains of plants over hundreds of millions of years ago in terrestrial ecosystem.
- Petroleum and natural gas are non renewable so we must use them judiciously.
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