Answer:
Hayflick theory
Explanation:
According to Hayflick theory aging process is controlled by a biological clock which lie within each living cell. According to this theory human cells have a limited life span.
this theory explain the mechanisms behind cellular aging. It suggests that a normal human cell can only replicate and divide arount forty to sixty times before it cannot divide anymore, and will break down by programmed cell death or apoptosis due to which number of body cells experiencing abnormalities with age.
The answer is D.
menstrual irregularity
<h2>Answer</h2>
Depreciation expense = $3500
<h2>Explanation</h2>
The van's purchase price = $45,000
It's salvage value = $3,000
<em>Subtract the salvage value from the purchase price to find the depreciable cost.</em>
Depreciation value = 45,000 - 3000
= $42000
<em>Divide the depreciable cost by the asset's lifespan to get the depreciation.</em>
Depreciation = Depreciation value / useful life
= 42000 / 6
= $7000 per year
from July 1 - dec 31 =6 months
= 7000/2 (12/6 = half year)
= $3500
<h2>Depreciation expense = $3500</h2>
