Answer:
C. experimental
Explanation:
Experimental variables are the variables that are changed during the experiments to observe the effects of these changes. An experiment usually has one or more experimental variables. An experimental variable that is changed to know its impact on some other variable is called the independent variable.
In the given experiment, goldfishes were exposed to various temperature conditions to observe the effect of temperature on respiration. Therefore, both temperature and respiration rate are the experimental variables here.
A strain of fruit flies lacks the ability to produce Dicer- 2 protein. You might expect this strain to be more susceptible to <u>A. viral</u> infections.
Infections happen when a microorganism enters someone’s body and causes damage.
The microorganism makes use of that person’s body to sustain itself, reproduce, and colonize. These infectious microscopic organisms are referred to as pathogens, and they can multiply quickly. Examples of pathogens consist of:
- microorganism
- viruses
- fungi
The immune system is an effective barrier to infectious sellers. but, pathogens might also every so often overwhelm the immune system’s capacity to fight them off. At this level, contamination turns into danger.
A few pathogens have little impact in any respect. Others produce pollutants or inflammatory materials that cause negative responses from the body. This alteration manner that a few infections are mild and barely important, whilst others may be excessive and existence-threatening. A few pathogens are proof against the remedy.
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The temperature of the oil increased more than the temperature of the water because vegetable oil has a lower heat capacity than water.
- Heat capacity is the ratio of heat absorbed to temperature change by a material.
- Typically, it is stated in terms of calories per degree. Oil can hold more heat than water.
- Compared to water, oil can be heated to high temperatures more quickly with a significantly lower energy input because it has a lower heat capacity than water..
- Oil transfers heat to food more gradually to a fixed temperature than water does.
- Oil can be heated to a higher temperature than water when it is in a liquid state.
Hence, the correct option is D.
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The respiration rate is much higher in smaller organisms. Larger organisms metabolize at a slower rate than smaller ones probably because smaller organisms are continuing to grow and therefore growing at a faster rate. So, small organisms produce excess carbon dioxide.