Daily human activities impact the ecosystem in innumerable ways. Human activities that pollute or disrupt the environment and the ecosystem are most common such as driving a car, or using a chemical product that pollutes the environment, throwing a way trash, littering etc. Humans also can interact with the ecosystem in positive ways by learning and engaging with nature in a way that leaves no harm such as observing birds or going on a hike. In addition humans can impact the ecosystem around them by hunting or killing animal species or plant life in the areas surrounding them which generally has a negative impact on the ecosystem.
There are now many lines of evidence to prove that a relatively large impact happened 65 My ago.
<span>The iridium excess in the 65 My-old soil layer has been confirmed at many points around the world.The same soil layer contains grains of quartz that were deformed by high shock pressures, as would occur in a giant explosion. (The deformation is a microscopic structure called "twinning," in the crystals).The same soil layer contains enough soot to correspond to burnding down all of the forests of the world. This suggests that massive fires were touched off at the time of impact.The same soil layer, especially around the Gulf of Mexico, contains massive deposits of tumbled boulders, as would be generated in a large tsunami, or "tidal wave." The geographic distribution of tsunami deposits suggest the impact was in the Caribbean area.After a decade of searching, scientists in 1990 identified the crater associated with this material. It is no longer visible on the surface of the Earth, but is buried under sediments. It straddles the coast of Yucatan. It is revealed by mapping the strength of the gravity field over that area, and by drilling; it has been dated to 65 My old.Astronomers have charted numerous asteroids that cross Earth's orbit. From studies of orbit statistics, it is estimated that asteroids of 10 km size can hit the earth roughly every 100 My or so -- which fits with the idea that we actually did get hit 65 My ago by an object this size. (Smaller hits are much more common). </span>How Was the Impact Event Discovered?
<span>In the late 1970s, a team of geochemists headed by Luis Alvarez and his son Walter Alvarez, both with connections to the University of California at Berkeley, was studying chemical changes in soil layers corresponding to breaks in the fossil record. In the soil layer that separates the Mesozoic Era from the Cenozoic Era, dating 65 My ago, they found an excess of the element iridium, which is common in meteorites. Meteorites are believed to be fragments of asteroids. Therefore, the Alvarez team theorized that an asteroid had hit Earth at this time, and that the debris ejected from the explosion were spread in the soil layer.</span>
For about ten years, this theory was extremely controversial. However, compelling evidence has accumulated to support the theory. From https://www.psi.edu
Answer:
I think its the precise location of a place
Explanation:
The correct answer is - ocean beaches.
Central Asia is a landlocked region, and the only water bodies that it has contact with are few large lakes, like the Caspian one. The region has no sea or ocean nearby, thus ocean beaches are not something that can be found.
Central Asia in general is a region that is arid and semi-arid, while the terrain varies between vast lowlands and very high mountains. The lowlands are mostly covered with grasslands or with deserts. The high mountains on the other hand, give a big contrast, as they are actually having numerous glaciers on them, despite being surrounded by deserts and steppes.