Answer: To provide the best possible view
Explanation:
The crow's nest was located on the upper part of the main mast in a large sailing ship. It was so named because it is thought that Vikings used to carry crows in cages attached to the top of the mast and when they couldn't see anything they would let the crow out and follow its flight path.
It is located as high on the mast as possible so that it may provide the best possible view of what is ahead so that the ship can be able to navigate better. It was replaced by radar to a large extent.
Answer:
This fluctuations occurs due to climate change.
Explanation:
Climate change occurs due to the presence of pollutant in the atmosphere of earth such as carbondioxide gas which is released from vehicles and industries. This carbondioxide is a greenhouse gas which absorb heat from the reflected solar radiation which increases the temperature of the surrounding and causes global warming. Due to this change, temperature fluctuate.
Answer:
Transverse and longitudinal waves are types of mechanical waves. The basic difference between transverse and longitudinal waves is that in transverse waves particles of waves move perpendicular in the direction of the wave while in longitudinal waves particles move horizontally in the direction of the wave.
Explanation:
It’s due to the leaching of nitrates into a terrestrial ecosystem.
