Answer:
The distribution of plants and animals are changed.
Explanation:
If there is a change occur in one part of the Ecozone so the animals and plants present in that ecozone migrated or die if there is no tolerance present in it. Change in ecozone occur due to climate change around the world. Due to global warming, the climate of ecozone changes which is not suitable for the animals and plants living in that ecozones so they migrated to other suitable regions and only those plants and animals survive which have tolerance in their body against that change.
It should be true as exactly 7.52% is arable land which rounds up to 8%
Answer:
b. flat rotation curves in spiral galaxies
Explanation:
Dark matter accounts for majority of the matter in the universe (about 85%). It is considered to be composed of subatomic particles which are yet to be discovered. Dark matter cannot be observed because it does not emit light that can be detected. Only its gravitational effect is visible.
Astronomers when calculated the mass of the visible matter and tried to account for the observed speed of stars in the galaxy, there was a mismatch. To understand what caused this mismatch, astronomers gave name to the invisible matter as the Dark Matter.
The expected velocity of stars should decrease away from the near the center of the galaxy but a constant velocity of stars was observed that is a relatively flat rotation curve was obtained.
Thus, flat rotation curves in spiral galaxies in an evidence of Dark Matter.
The Presidential Election map showed that The deep political divisions in the United States created a fractured electorate.
<h3 /><h3>What was shown by the 1860 election map?</h3>
The Democrats supported slavery in 1860 which was why they won the votes in the South. This was because the South supported slavery as their main economic industries such as cash crops, relied on enslaved labor.
The Republicans led by Abraham Lincoln were against slavery and were able to win in the North. This was because the North were against slavery for a mix of reasons with one of them being that they didn't like how cheap labor was in the South.
This showed that the political divisions in the U.S. led to a fractured electorate.
Find out more on the election of 1860 at brainly.com/question/579219
#SPJ1
In 1990 rice production= 350 million tons
In 1999 rice production = 400 million tons
400-350= 50 million ton increase
50/350=.1428 To calculate the percentage increase you divide the total amount increased by the initial amount to determine the percent.
Therefore the world rice production increased by approximately 14% from 1990 to 1999.
