Answer:
The answer is option D.
Explanation:
An ecological pointer is a parameter, or an esteem got from parameters, that focuses to, gives data about as well as portrays the condition of the earth, and has an importance stretching out past that specifically connected with some random parametric esteem. Natural factor or biological factor or Eco factor is any factor, that impacts living life forms. A biotic factors incorporate encompassing temperature, measure of daylight, and pH of the water soil in which a life form lives.The three fundamental kinds of adjustments, in view of how the hereditary changes are communicated, are basic, physiological and social adjustments. Most living beings have mixes of every one of these sorts.
