Because renewable sources are renewable which means you can continually go back for more<span />
Explanation:
I'll try to help what is the question
The basic components (depedent and indepedent variables) are the plants and altitude while the confounding variable is the 20 story building. Confounding variables affect the experiement variable and are mainly outside of the researcher’s control in the experiment. Ray cannot change the building but this variable can affect the depedent and indepedent variables and cause distorted or spurious results.
Note about the question:
You will find the pedigree in the attached file
Answer:
The boy and the girl represented by solid black-colored square and circle, respectively, are affected with sickle cell anemia
Explanation: A pedigree tells information about the phenotype of individuals in the family. There are certain symbols to take into count when analyzing a pedigree. Among many others, a few to consider in this particular problem are
- Squares that represent males
- Circles that represent females
- White shapes that represent healthy or normal individuals
- Black shapes that represent affected individuals
The affection in this problem comes from the paternal line. Susan´s husband is affected by sickle cell anemia. His mother and his grandmother are also affected.
Susan is a healthy woman. They had four children. Two girls (circles) and two boys (squares).
From this last generation, one of the girls (black circle) and one of the boys (black square) are affected.
I believe the answer to this question is a food web.
Food Web definition: "<span>a series of organisms related by predator-prey and consumer-resource interactions; the entirety of interrelated food chains in an ecological community."
Source: </span>http://www.dictionary.com/browse/food-web