Explain the concept of biodiversity.​

Biodiversity is defined as “the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems.” The importance of this definition ...Biodiversity is usually explored at three levels - genetic diversity, species diversity and ecosystem diversity. These three levels work together to create the complexity of life on Earth.The word biodiversity is a contraction of the phrase "biological diversity" and was first coined in 1985 by Walter Rosen of the National Research Council as a title word in a seminar he was organizing to discuss biological diversity.

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for question 8

1: it gets the blood pumping more

2: endorphins and other neurotransmitters

answer is b

  a   having low self-esteem

  b   having abusive family members

  c   having poor school attendance

  d   having friends who discuss gang life

living torture and being abused makes one not mind harming other people.

and also not being supported and abusing one turns one into this state.