Answer:
Lightyears
Explanation:
When dealing with very large interstellar distances, astronomers do not use the regular miles, kilometers, or meters we are used to. This is because they are just too small to be used as a metric when measuring such large distances. As a matter of fact, the earthly number system will quickly be exhausted when trying to measure some of these interstellar distances.
Instead, astronomers make use of Lightyears. Lightyears are defined by the distance traveled by an object moving at the speed of light if it was moving constantly at that speed for one year.
This can properly be used to estimate interstellar distances. since its value is very large. 1 lightyear = 9,461,000,000,000 Km
If we say that our closest star is 9 lightyears away, we are saying that it will take an object moving at the speed of light 9 years to travel from that star to our planet.
Answer:
How plants cope with cope stress?
Stress comes in diverse ways for plants and they are being controlled in different ways ranging from the possession of cell wall that gives rigidity which helps to cope during wind or whirl wind and also helps to maintain it shapes, also water storage vacuole helps the plants to store water for long and helps to fight drought when there is no water for usage. Furthermore, the cell wall helps against mechanical attack or physical attack, the possession of thick bark helps not to lose water easily especially to plants in dry environment or high temperature environment that allows for high transpiration.
Explanation:
There are different kinds of tides. This change occur because when the gravitational pull of the sun works along with the gravitational pull of the moon on Earth, it leads to the oceans bulging out.
- This result above makes the high tides as been little higher and low tides been little lower than normal.
Spring tides are known to be the deepest as oceans levels are highest in this kind of tide. The neap tides are known to be the shallowest.
This often occurs when the moon, earth, and sun are said to be at a right-angled plane. Therefore, the gravitation pull of the moon and sun on the oceans do counteract each other making its net effect is smaller.
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Non-renewable energy<span> sources like </span>coal<span>, </span>oil<span>, </span>natural gas<span> are those sources that cannot be reproduced, are limited and </span>will<span> be expired in the The </span>use of coal<span> and other </span>fossil fuels<span> have only increased since they were discovered. Nuclear power plants produce some sort of nuclear waste </span>called<span> radioactive elements.</span>
