Answer:
the growth of the plants and the environment of the plants.
Explanation:
C. Carbon
Mercury is dangerous to humans
Carbon is the main element in organic compounds, so carbon is essential to life on Earth.
Answer:
Zhoukoudian
Explanation:
Zhoukoudian can be seen as a cave system which is found in suburban Fangshan District, Beijing in which It has yielded many archaeological discoveries, which include one of the first specimens of Homo erectus , dubbed Peking Man,as well as a fine assemblage of bones of the gigantic hyena Pachycrocuta brevirostris.
The cave was identified as Homo erectus and it said to have more than 10,000 pieces of stoneware, several cinder layers indicating fire use in early man, as well as animal fossils which are from 200 separate species.
Therefore Zhoukoudian is the homo erectus site that provides the longest record of habitation
The correct answer is D. i, ii, iii.
All of the above demonstrate the colleagues which are termed as easy to get along with.
