The tubes and bottles are autoclaved in order to sterilize the nutrient broth and nutrient agar.
<h3>What do you mean by sterilize?</h3>
To rid (something or someone) of all live microbes in order to make it sterile (as by the use of steam or dry heat) Use an autoclave to sterilize surgical instruments. to surgically sterilize cats and dogs in order to remove their reproductive ability.
<h3>How do we sterilize?</h3>
Combining heat, chemicals, irradiation, high pressure, and filtration can result in sterilization. Examples include the use of steam under pressure, dry heat, UV radiation, gas vapor sterilant, chlorine dioxide gas, etc.
<h3>What makes sterilization important?</h3>
To stop the spread of diseases linked to the usage of an object, sterilization eliminates all bacteria on its surface or in its fluid.
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Answer: A. Spruce trees reduce the sunlight available to young pine trees, thus decreasing the environment's carrying capacity for pine trees.
Explanation:
Carrying capacity is the maximum number of the members of the population of a species which an ecosystem can sustain in terms of availing the resources. The population size will be affected when the carrying capacity does not meet the demand of the population.
In the given situation, the pine trees requires the sunlight to mature whereas the spruce trees requires the shade to get mature. If the spruce trees are taller than the pine trees they are likely to reduce the available sunlight of the young pine trees. Hence, the environmental carrying capacity for pine trees will decrease in the absence of proper sunlight.
The arrangement favor the rotational movement around the vertical axis. Although it is possible to have some flexion, extension and lateral bending moments also.
Magnetic field i would say
