They need an independent variable, in this case it should have been the fish food. Everything should be identical except the fish food, from what I read , it doesn't say anything about what type of food they used, or the dosage.
A. Efficient distribution of goods
Explanation:
The benefit of urban development is in the efficient distribution of goods and services.
Urban centers can have very efficient systems of moving goods from one place to another.
An urban area is a city or densely populated area.
- The population provides rapid ways of getting labor to move goods.
- Technology in such areas also leads to prompt and precise sharing of information about where goods are needed.
The other options highlights the disadvantages of urban development.
learn more:
Urban driving brainly.com/question/4729064
#learnwithBrainly
Answer:
This question lacks options, options are: A) Heterochromatin and euchromatin
B) Uniform in the genetic information they contain
C) Separated by large sketches of repetitive DNA
D) Each void of typical protein-coding sequences of DNA
E) Void of introns.
The correct answer is A.
Explanation:
The chromatin or substance that makes up the nuclei of cells and that results from the interaction of DNA with histonic and non-histonic proteins and RNA; it can present different degrees of packing or contraction. When chromosomes are stained with chemicals that bind to DNA, densely stained regions and less densely stained regions appear. Heterochromatin are segments of the chromosome that stain strongly and remain visible, practically, during the entire cell cycle. There are few genes in these regions and therefore low transcriptional activity. They are supercondensed regions. Euchromatin are segments of the chromosome that are not visible during telophase and interphase, only in metaphase. It corresponds to regions that are less compact and in which there is a higher gene density.
Answer:
Neither species benefits.
Explanation:
For example, two different species that prey on the same or similar species of prey would be negatively effected by their competition for food, because there would be less food.
