Answer:
the process by which oxygen released into the atmosphere by photosynthetic organisms is taken up by aerobic organisms while the carbon dioxide released as a by-product of repiration is taken up for photosynthesis.
Explanation:
Plants use carbon dioxide in a process known as photosynthesis. During photosynthesis, plants give off oxygen as a waste product. Carbon dioxide moves from the air into the leaves of plants through tiny openings in the plant's leaves. Oxygen moves out of the plant leaf through these same openings
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Answer:</h2>
<u>c. Solstice</u> describes days when sun's rays directly hit Tropic of Cancer and Tropic of Capricorn.
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Explanation:</h2>
The solstices occur due to the declination of the Earth's orbital movement around the sun. During this declination, the axial tilt is 23.5°. Furthermore, solstice's occurrence is during time the sun's direction is overhead the moon.
In Northern hemisphere, the declination is towards Tropic of Cancer with the axial tilt of 23.5°N. It occurs on June 20 & 22 while in the south the normal period of occurrence is between December 20 and December 23. In the south, the solar declination hits Tropic of Capricorn at 23.5°S.
The only legitimate basis for the formation of a state is the nation.
Explanation:
The formation of a state can be an easy or a very complicated process. Also, it can be done in a peaceful manner, or through usage of violence and military action. The states have been formed in many different ways over the course of the history. The principle of self-determination though states that the only legitimate basis for the formation of a state is the nation.
- This principle seems good and legit, but in practice has turned out to be very problematic.
- Numerous states have been formed without really having a nation, but more a mixture of different people and cultures stuffed together without even asking them for it.
- There a re lot of nations around the world that do not have states, or rather are not allowed to have states, such as the Basques, Catalans, Kurdish etc.
- Some states have been formed because of the interest of other states, like the example of Kosovo in the Balkans.
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