Nitrogen must be converted into nitrates before organisms can use it. If soil lacks nitrogen fixing bacteria, then it has few nitrates for the plants to take in.
Answer:
The great saphenous vein originates on the medial foot and empties into the femoral vein.
Explanation:
Answer to 9 is b (because bodily fluid is the easiest way to contract a disease)
And answer to 10 is a (because the disease is transferred by saliva)
Answer:
The action potential rate will be doubled
Explanation:
The logarithm of a number for a given base is the power to which the base must be raised to give the number. Logarithm of a number can be in different bases. The base of common logarithm is the base 10.
For example, logarithm of 1000 to base 10 is 3 because 10 raised to power 3 equals 1000
Log₁₀1000 = 3 since 10³ = 1000
Therefore, if there is a logarithmic relationship between stimulus intensity and action potential frequency in sensory neurons and the stimulus intensity increases by 100, the action potential rate will increase thus:
Log₁₀100 = 2
Therefore, the action potential rate will be doubled
