Food chains are for example something that another thing eats and it goes down to many different selections and starts off big and vies to small things
What they mean by "base" is the substance. A base is a substance that tastes bitter, has a pH that is greater than 7. It also turns red litmus paper blue.
In conclusion, what they mean by 'base' is the substance included.
Gonadotropin releasing hormones causes the ovaries and testes to greatly increase their production of estradiol and testosterone.
Gonadotropin releasing hormone is a hormone is released from nerve cells in the brain or produced in hypothalamus and transported to the pituitary gland through the blood stream. These hormones are very important in fertility.
Secondary succession occurs after the initial succession has been disrupted and some plants and animals still exist. The disruption occurs afer an event like a forrest fire or hurricane destroys the forest.
