The sun gives direct energy and sunlight to the producer. The producer will grow until it reaches adulthood. A consumer will come eat from that said producer and receive its energy.
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.
Una pieza de roca áspera. I'm only guessing <span />