D. all of the above.
Many people have their own preferences on people. For example, a 30 year old could want a younger s/o or an older s/o.
Let's first think what could be a "positive" impact - this would mean making the environment more clean and more friendly towards other species.
So they could clean up the environment (from the mess that was likely introduced by a human activity) and support other organisms in it - for example by removing the physical barriers for migration of other species (bridges over the streets for example) <span />
Answer:
The answer is 50,000,000
Explanation:
Plague has been responsible for widespread pandemics with high mortality. It was known as the "Black Death" during the fourteenth century, causing an estimated 50 million deaths, approximately half of them in Asia and Africa and the other half in Europe, where a quarter of the population succumbed.
B. he conquered constantinople in 1451 AD
