Answer:
Explanation:
Metric Units helps to make measurements and calculation a easy task.
Metric unit is a Standard system that enables result to be comoare among scientist including biology scientist when work from different part of the country.
metric system has individual unit that is few about 30 individual units that are important in some fields.
<u>Answer:</u>
<em>Atomic clock doesn’t contain decaying isotopes.
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<u>Explanation:</u><u>
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It is the <em>decay of radioactive elements</em> that emit radiations and most of these are harmful to life. But atomic clock doesn’t work on the principle of atomic decay. There is no atomic decay occurring in an atomic clock and thus there is no <em>harmful radiation being emitted from the atomic clock</em>.
Caesium atomic clocks, rubidium atomic clocks etc are some of the atomic clocks. The working principle of atomic clocks is the transition of atoms between various energy levels.
The <em>frequency of Electromagnetic signal</em> emitted during transition of atoms to higher energy levels is the basic factor that determines the working and <em>efficiency of an atomic clock.
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Answer:
b. they are both performed by plants.
Explanation:
Photosynthesis is the process of transforming light energy into chemical energy by green plants. During the process, the plants make use of solar energy in order to convert carbon dioxide and water into carbohydrates. And also releases oxygen into the atmosphere. Photosynthesis is called primary production because the food produced by the process makes the base of most ecosystem food chains. It stores energy at the bottom level of the food chain.
All animals are dependent on photosynthesis because animals depend on glucose as their energy source, but they are incapable of producing it on their own, so they must depend on plants in order to get glucose.
And also the oxygen that animals breathe is released during photosynthesis.
Cellular respiration:
It is the process through which living cells degrade glucose molecules, releasing energy, and store it as ATP molecules. Overall, glucose and oxygen react to generate carbon dioxide and water in this three-stage process.
