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bazaltina [42]
3 years ago
7

A group of students is setting up a test to see whether earthworms prefer rough or smooth surfaces which type of investigation i

s the group doing A.Comparative B. Descriptive. C. Controlled. D. Experimental
Biology
1 answer:
dezoksy [38]3 years ago
7 0

Answer: The answer is A. Comparative

Explanation: The photo shows two different types of soil with the same type of worm. Therefore this it a comparative experiment. Trust me I got this question correct.

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3 years ago
The shortest length of time required to kill all test microbes at a specified temperature is the thermal death ________ whereas
Aliun [14]

Answer:

time; point

Explanation:

The complete question is as follows:

The shortest length of time required to kill all test microbes at a specified temperature is the thermal death __________ whereas the lowest temperature required to kill all microbes in a sample within 10 minutes is the thermal death _________.

time; point

window; point

point; time

time; temperature

  • When a population of bacteria gets killed due to exposure to high temperatures then this is termed as thermal death.
  • The time taken to kill a specific microbe at a specific temperature is termed as the thermal death time. The length of the time taken depends on the nature of the target microbe and hence, varies from one to another.
  • The lowest temperature that will kill all the microbes in a sample within ten minutes is defined as the thermal death point. The temperature at which the microbes get killed within 10 minutes also varies from one microbe to another.
  • Thermal death results in the disruption of the cell membranes of the microbes and hence can kill the microbes.
6 0
3 years ago
An increase in the volume of forests and phytoplankton would lead to a reduction in free "blank" , which in turn could cause a d
lord [1]

Answer: Carbon dioxide

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The forests and phytoplankton are carbon sinks, which absorbs the green house gas carbon dioxide from the atmosphere for photosynthesis. The carbon dioxide from the atmosphere and water are used as reactant in photosynthesis to yield carbohydrates and oxygen as products. Thus the carbon dioxide level in atmosphere decreases. This is necessary for controlling pollution in the environment and reducing the environmental temperature as carbon dioxide can make the environment warm.

5 0
2 years ago
Which statement best explains the impact of unfavorable oceanic conditions on human behavior?
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Boating activities decrease along shorelines :)
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