How did beijing become the capital of china?
1 answer:
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<u>There are three main types of reservoirs; valley-dammed reservoirs, bank-side reservoirs, and service reservoirs. Valley-dammed reservoirs are created in valleys between mountains. Usually, there is an existing lake or body of water.</u>
Answer:
23. b
25. b
27. b
28. b
29. a
Explanation:
23. The earth have seasons because our Earth orbits around the sun with the Earth's axis of rotation being tilted at an angle of to the plane of the orbit.
24. Ozone in the protect us against the harmful ultraviolet rays coming from the sun.
The ozone layer is found to be located at the Stratosphere's lower part where the variation in its thickness depends on the seasons and the geography.
25. This phenomena is termed as equinox where at this time period, the Sun is Directly over the equator.
26. The part of the earth that provides us the protection against emissions from the sun is 'atmosphere' and it also creates the Aurora Borealis which is formed as a result of the interaction of the charged particles resulting from a storm of proton with the atmosphere giving rise to the aurora.
27. In a closed system, any waste items delivered by one animal types must be utilized by at different species.
28. Positive feedback promotes change as in this the underlying impact is improved or enhanced.
29. Sinks are those locations in a system where resources are collected..