The given question is incomplete, the complete question is:
Demographic Transition and Clear Cutting a. The consequences of a growing human population have been a concern since the times of Thomas Malthus when he proposed that humans could exceed their carrying capacity on Earth.
i. Describe the concept of carrying capacity for a species. ii. Describe how a change in the availability of a specific resource can affect the carrying capacity of a species
Answer:
i) The maximum population of the specific species, which can be maintained within a particular environment is termed as the carrying capacity of that species. It relies upon the accessibility of water, food, shelter, habitat, and all the other resources.
ii) The defining factor of the carrying capacity of a species is the accessibility of resources. The increase in the population of a species can result in a deficiency of resources and this will eventually cause a reduction in the population of that species. Certain factors like scarcity of food, water, or even because of certain diseases the carrying capacity will reduce resulting in a reduction of the population.
Answer:
The two important conditions that must be met before gram staining are-
1. The age of the culture should not exceed 24 hours.
2. Over heating, decolonization should be avoided.
Explanation:
Gram staining is a technique developed to distinguish the bacteria on the basis of the composition of the cell wall around the bacteria.
The gram stain is a sensitive technique so must be performed carefully. The precautions should be taken to avoid any error while gram staining that is-
1. Age of the culture- The culture should be freshly prepared just 18-24 hours before the experiment as above 24 hours bacteria lose their ability to retain the color so one would not be able to differentiate between the cultures.
2. While performing the experiment one should avoid overheating and decolorization with ethanol as both the factors lead to the loss of crystal violet stain from the cell and they take pinkish color after safranin staying.
I took the test and the answer is not shear, so don't put that one. My next choice would have been strain.
Mutation ( that’s what I put )
