Answer: No
According to <u><em>BBC</em></u>, Human activities such as harvesting plants and hunting animals can unbalance the flows and cycles within those [SMALL SCALE ECOSYSTEMS ]ecosystems. Tree-felling may lead to soil erosion and a loss of habitat. Lack of shade and moisture in the soil can result in desertification.
According to <u><em>National Geographic</em></u>, Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
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Last one - Biodiversity is the diversity of species in an area, which makes an ecosystem better prepared for major changes 
Explanation:
If one crop struggles to grow then there will be plenty of others to substitute it. If a prey animal is dying at a faster rate and harder to find, predators can have other prey options and so forth. Biodiversity makes it so ecosystems can get past change. 
 
        
             
        
        
        
Explanation:
Solar eclipse
-The moon is in-between the earth and sun.
-only lasts for a few minutes.
Lunar eclipse 
-The earth is in-between the sun and moon.
-can last up too an hour
Hope this helps!!
 
        
             
        
        
        
Answer:
a structure composed of several proteins that associate with the centromere region of a chromosome and that can bind to spindle microtubules
Explanation:
Kinetochores have  vvery important role in the cell division-mitosis.
During the metaphase of mitosis, spindle fibers attach to kinetochores. Some of the microtubules bind to kinetochore (kinetochore microtubules) while other don’t: they connect with the microtubules from the opposite pole, stabilizing the spindle.
 During the anaphase, kinetochore microtubules pull chromosomes toward poles, helping the sister chromatids separate from each other.  
 
        
             
        
        
        
Answer:
volcanic eruption and solar variation 
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