Answer:
the formation of new and distinct species in the course of evolution.
Answer:
Brain cells are very sensitive to a lack of oxygen. Some brain cells start dying less than 5 minutes after their oxygen supply disappears. As a result, brain hypoxia can rapidly cause severe brain damage or death.
Explanation:
Other symptoms can include: hallucinations and delusions; increased agitation and confusion; depression and other mood disorders; personality changes, such as irritability and a reduced threshold for frustration; and an inability to focus or concentrate.
I'm pretty sure it is wood, mainly because there is a wide range of trees in the world, and it's probably the only renewable source out of the four. The other three are non-renewable.
Answer:
Internal Cycling
Explanation:
Internal cycling starts when the nutrients transform into ecosystems. The plants through their roots take the necessary ingredients and built them in the tissues. When tissues grow, the nutrients go back to the ground in the form of dead organic matter.
Microbes transform the organic nutrients into minerals, which are again available to the plants.
1.ultraviolet (UV) rays
2.gamma rays
3.ferrous salts
4.mustard gas
5.X-rays
6.caffeine