D
Freshwater;
- It constitutes approximately 30% of Earth's freshwater.
- It is the only viable source of freshwater in some areas.
- It is available in conditions of drought.
Explanation:
Groundwater is water that is located under the surface of the earth in the rocks of the crust usually filled by the percolation of water from precipitation. During drought, when all surface waters have dried up, wells can be dug to access groundwater in aquifers. This groundwater is also important in regions where surface waters have been contaminated such as by industrial waste. However, it is important that this water is not overdrawn. The rate at which it is drawn should match the rate at which the waters are refilled by percolating water into the ground.
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Answer:
1) The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs 2)Cellular respiration breaks down glucose into water and carbon dioxide producing 38 net ATP molecules. ATP is the energy containing nucleotide in cells while the energy found in glucose is used to make ATP. The key difference between glucose and ATP is the composition of these two molecules 3)The basic idea of a hypothesis is that there is no pre-determined outcome. ... A key function in this step in the scientific method is deriving predictions from the hypotheses about the results of future experiments, and then performing those experiments to see whether they support the predictions
Answer:
<h3>The answer is 7.80 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of metal = 1170 g
volume = 150 cm³
We have
We have the final answer as
<h3>7.80 g/cm³</h3>
Hope this helps you
Hydrogen fuel works on the principle of making water by H2 and O2 !!
At the cathode (negative electrode): H2(g)-2e →2H+(aq)
At the anode (positive electrode): 4H+(aq) + O2(g) + 4e– → 2H2O(g)
* As there is no harmful gasses evolve, and only water is formed so these cells are clean and healthy to use !!
(ADDITIONAL)
and remember these are 90-98% efficient !! as compare to petrol or diesel that are 50-60% efficient !!
Hydrogen fuel cells are used in Space programs to make pure water and other purposes !!
Answer:
The answer is Mitochondria. I took the test and that's the correct answer.
