<u>Answer</u>:
1. The purpose of the uninoculated control tubes used in the oxidation fermentation test is to serve as basis of the medium for the color comparison and that it is sterile.
2. It is necessary to use two controls in order to illustrate the no color change (green color) under both aerobic and anaerobic conditions.
3. The purpose of the experiment is to determine if the organisms utilize the carbohydrate and thus is fermentative. This will result in a color change from green to yellow.
Thus, the medium in one tube is sealed with a layer of paraffin to prevent diffusion of oxygen. This tube will show that the medium is unaffected by the lack of oxygen.
The second tube will allow the diffusion of oxygen. This tube will show that the medium does not change color naturally in the presence of oxygen. Thus, the color changes will be caused only by the fermentation process of the organisms.
Answer:
The wolves helped the ecosystem. I know this because of this sentence: The entire ecosystem became degraded until wolves became protected when they were determined to be an endangered species.
Explanation:
Hope this helps
Answer: B. The number of individuals that a habitat can sustain with the resources that it has available.
Explanation:
A carrying capacity is the number of individuals of the population belonging to a particular species that an habitat or region or ecosystem can support or sustain in terms of providing the resources. If the population exceeds over the carrying capacity then this results in decline in members of the population.
According to the above description the accurate definition of carrying capacity is B.
Answer:
Add a Picture
Explanation:
Add a picture please so I can answer it, otherwise im just going to have to guess its Moss, Algei or Bacteria lol
Answer:
The expected results could be explained in different ways.
Explanation:
When the results of the investigation tell a different story from the proposed investigation, that is not related to the hypothesis or research topic, it is advisable that the scientist changes their hypothesis to fit the investigation outcome.
