Answer:
Chemical reactions.
Explanation:
Chemistry is the study of different chemicals and their chemical reaction. Every day one uses the things all are made up of chemicals. All the chemicals and matters are the result of the chemical reaction.
For example, water is a compound which is formed by the hydrogen bond between the 2 hydrogens and one oxygen molecule. The properties of water are also different from individual hydrogen and oxygen molecules.
Our body is also made up of 70% to 80 % of water. All the metabolic reaction need water. Similarly, all matters are made up of chemicals. Chemical reactions happen when an organism eat, breathe, division of cell occur, etc. Every physiological process includes a chemical reaction.
The living organisms consist of some biomolecules, carbon, hydrogen, oxygen, nitrogen. All are playing a vital role in different biochemical reactions. Biochemistry is the branch of study in biology which deals with the role of chemistry in biology.
Chemistry and biology are important for studying the different chemical reactions occur in the living organisms. Proteins, carbohydrates, lipids, are all formed due to the chemical reaction and these are known as biomolecules.
The compositional layer that is divided between three mechanical layers is the Earth's crust. The Earth's crust is the outermost layer of the Earth's solid surface and is composed of several distinct mechanical layers, namely the lithosphere, the asthenosphere, and the mesosphere.
1. Lithosphere: The lithosphere is the rigid, outermost mechanical layer of the Earth's crust. It is composed of the uppermost part of the mantle and the crust. The lithosphere is broken into tectonic plates that float and move on the semi-fluid asthenosphere below.
2. Asthenosphere: The asthenosphere is a semi-fluid, plastic-like layer beneath the lithosphere. It is composed of hot, weak, and partially molten rock materials. The asthenosphere allows the tectonic plates of the lithosphere to move and interact with each other.
3. Mesosphere: The mesosphere, also known as the lower mantle, is the deepest mechanical layer beneath the asthenosphere. It is a more rigid and solid layer compared to the asthenosphere. The mesosphere extends from the bottom of the asthenosphere to the Earth's outer core.
Together, these three mechanical layers form the Earth's crust, which is the outermost compositional layer of the Earth.
B. communalistic relationship
C. mutuality relationship
D. parasitic relationship
Burning fossil fuels causes a direct increase in the temperatures of ocean water.
b.
Burning fossil fuels causes a decrease in the pH of ocean water making it more acidic.
c.
Pollution in marine ecosystems causes a decrease in the formation of algal blooms.
d.
Addition of warm water has no effect on marine ecosystems.
Answer is b. Burning fossil fuels causes a decrease in the pH of ocean water making it more acidic.
Burning of fossil fuels release carbon dioxide and other harmful gases in the atmosphere. Carbon dioxide gets dissolves in the ocean to form carbonic acid. Due to formation carbonic acid, the pH of ocean water changes slightly. The average pH of ocean water was 8.2 slightly basic. Now it 8.1, it means there is 25 % increase in acidity of ocean water.
The True statement about the effect of pollution on marine ecosystem is : Burning fossil fuels causes a decrease in the pH of ocean water making it more acidic ( B )
When we Burn fossil fuels carbon dioxide and other harmful gases are released into the atmosphere.The Carbon dioxide gases gets dissolves in the ocean to form carbonic acid. The formation of carbonic acid leads to a change in the pH level of the ocean.
Hence we can conclude that The True statement about the effect of pollution on marine ecosystem is : Burning fossil fuels causes a decrease in the pH of ocean water making it more acidic ( B )
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