Approximately 96% of the Earth's water is salt water in the oceans and seas. Therefore, only 4% of the Earth's water is fresh water.Groundwater is an important source of freshwater storage because <span> It is the only viable source of freshwater in some areas.
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</span></span>b. It is the only viable source of freshwater in some areas.
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Answer:
Google is great sometimes
Explanation:
Type your question in google
Answer:
Option a. is correct
Explanation:
A mutation refers to a change in our DNA sequence which causes it to break down. It occurs due to the following reasons:
1. Due to mistakes when the DNA is copied
2. Due to environmental factors such as UV light, smoking.
3. Exposure to specific chemicals or radiation
The mechanism for reactive oxygen species to cause mutation is that bases are oxidized to a variety of different products which might pair with a different base than the original base would have.
The answer would be between b and d but i would go with d
