Answer: The second answer because, the Earth's mantle is mainly a fluid, but sometimes a solid. It rises, but never sinks.
Hope his helped! <3
The answer choices are not provided, so I cannot select the correct one. However, I may provide you examples and guidance on how to choose the correct one.
As mentioned in the explanation, a scientific question must have a variable that is changed, the independent variable, and a variable on which the effect of the change is measured. This is the dependent variable. Examples of such questions include:
How will the amount of water given to a plant affect its rate of growth?
What will be the amount of sugar that can be dissolved in water at a given temperature?
At what temperature will a balloon filled with air pop?
All of these questions may be tested using experiments.
Answer:
Some human activities that cause damage (either directly or indirectly) to the environment on a global scale include population growth, overconsumption, overexploitation, pollution, and deforestation, to name but a few.
The primary energy source of the brain is glucose. Thus, option d is correct.
<h3>What is brain ?</h3>
Brain is a complicated or complex organ of human body that controls all the functions of the body such as memory, thought, vision, breathing, temperature, and all functions of the body.
Brains requires energy for functioning various functions of the body and the primary source of energy of the brain is glucose.
Brain is the one of the largest organ of the body and brain weight of an adult male is 1336 gr and for the adult female is 1198 gr.
Therefore, primary energy source of the brain is glucose. Thus, option d is correct.
Learn more about brain here:
brainly.com/question/11950231
#SPJ4
