Answer:
Oxygen
Explanation:
The heart, like any organ, requires blood for oxygen and other nutrients so it can do its work. The heart does not gather oxygen or nutrients from the blood flowing inside it. Instead, it receives blood from coronary arteries that eventually carry blood into the heart muscle.
Ground water is water which is located below the soil surface and contained in the pore spaces of bedrock, sand, gravel, and other such materials.
the researchers concluded that more water probably exists deep within the Earth than is present on Earth's surface—as much as five times more.
Most ground water originates from precipitation that soaks into the ground. The ground water system as a whole leads the water in the general direction of the ocean.
The water table is the surface where the water pressure head is equal to the atmospheric pressure. It may be conveniently visualized as the "surface" of the subsurface materials that are saturated with groundwater in a given vicinity.
I’m confuse between A and B but I think it is mostly B
Hello. Your question is incomplete. However, I managed to find a question exactly like yours on the internet and managed to realize that you forgot to say that your question asks you to give an example of the statement presented above.
Answer:
A major disturbance from which the ecosystem was able to recover completely was the disease that almost wiped out all of Ireland's potato in 1840.
Explanation:
You may have heard of the Irish Potato Famine, which was a time when the Irish population lived very difficult days, after an illness that almost decimated the country's potato plantations.
The potato was the main source of food for the Irish, but in 1840, a fungus called Phytophthora infestans, managed to infect almost all potato plantations in the country, preventing the potato from being harvested and could be consumed. This created major economic and social problems in Ireland, as people suffered from hunger, poverty and the diseases that arose, which caused many Irish people to immigrate to other countries, or to die.
The fungus plagued the ecosystem for years and only started to decrease in intensity in 1850, once the ecosystem started to recover. Currently, although the pest still exists, the Irish ecosystem is completely recovered and the pest is controlled and is unable to make such an impact.
