Answer:
Thank you so much i really needed this :)
Explanation:
The correct answer is - 640 light-years.
The light-year represents the distance the light can pass in one year, so since we have 640 years of light travel to the Earth from the Betelgeuse Star, we have 640 light years of distance.
Now the distance itself is a totally different matter, because the light-year is a distance measure, not a time measure. One light year equals to 9,460,730,472,580.8 km of distance passed by the light in one Julian year, so in 640 years it will come to a distance of 6,054,867,697,356,520 km that the light has passed in order to reach our planet.
Answer:
Answer: The hydroelectric plant will likely pollute the water flowing down the waterfall.
Hydropower dams degrade water quality along rivers. Water that flows downstream from the dams is depleted of oxygen, which harms many aquatic animals. The reservoirs above dams are susceptible to harmful algal blooms, and can leach toxic metals such as mercury from submerged soil
Explanation:
how does the building of a dam affect the environment?
Flooding and the destruction of surrounding habitat: Dammed rivers create a reservoir upstream from the dam, which spills out into the surrounding environments and floods ecosystems and habitats that once existed there. Such flooding can kill or displace many different organisms, including plants, wildlife, and humans.
Answer:
Seismic waves are recorded by a machine called a seismograph, which tells us about the strength and speed of the seismic waves
Explanation:
Answer:
how volcanic activity can sometimes benefit humans
Explanation:
