Invertebrates and fish that eat dead organic matter will be most abundant in the<u> benthic zone of freshwater lakes.</u>
In a marine water body, the most lowest zone in terms of ecology is called benthic zone. It name comes from the Greek letter βένθος which means 'depths'.
In this zone, sediments lay down at floor of the sea and provide essential nutrients and minerals to the organisms living in this zone.
Benthic zone, also referred to as ecological zone, possesses peculiar characteristics such as high pressure and low temperature.
The sediments of this zone recycle the nutrients and help in the survival of aquatic organisms.
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Answer:
<em>The correct option is d) once the electrical impulse reaches a certain level of intensity (its threshold), it fires and moves all the way down the axon without losing any intensity.</em>
Explanation:
In the field of biology, the all-or-nothing law can be described as a principle which focuses on the strength with which a nerve or muscle fibre responds to a particular stimulus, this strength being independent of the strength of the stimulus. The functioning of the impulse is just like the trigger of a gun. The more the force of a stimulus, the more will be the intensity of the nerve impulse.
-10grade/week
Explanation:
Given parameters:
Initial grade = 95grade
Final grade = 65grade
Time = 3weeks
Unknown parameter:
Rate of change of grade = ?
Solution:
Rate is defined as the change of a quantity with time.
Rate of change of grade = 
Rate of change of grade = 
= 
Rate of change of grade = -10grade/week
The rate of change of the student's grade is -10grade/week. It implies that the grade of the student reduces by 10unit per week.
C.Xylem
Xylem is where the nutrients and water gets transported upward
I think it's surface area would be less than it's volume so it means it won't be able to get nutrition as needed.
hope this helps :P
