Natural selection means that the organisms better adapted to their environment, that is, they have developed the right characteristics/skills/response to the external ambient, have higher chance to survive, making the next generations genetically inherit such acquired surviving characteristics.
These generations will thus have a higher chance of survival, making these species being "naturally selected" as survivors, while those who haven't or are slower in this process, have a higher risk of elimination.
It is observed that the human population keep increasing significantly and it began to increase noticeably around 10,000 years ago.The greatest factor of this increase is the rapid development of the agricultures in lands, as well as the domestication of animals. These are the reasons why population increases at that time.
Answer: Number 4 goes to - rise of one part of Earth's crust above another
Number 3 goes to - sinking of one tectonic plate beneath another
Number 1 goes to - pressure an chemical processes that transform sediment into rock
Number 2 goes to - small pieces of broken down,weathered rock
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Answer:
nuclear <u>fussion</u> occurs in star's core that combines elements to make BIGGER elements.
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Answer:
Inorganic fertilizers are not entirely composed of the nutrients needed by the plants. It also contains salts and other compounds. These are not absorbed by the plants so they are left behind in the soil and build up over time.