There are _____ kinds of joints present in a human body?
Skin cancer known as Melanoma associated with ____________?
A. ozone accumulation
B. ozone depletion
C. acid rain
D. allergens
____________ is the outermost layer of skin.
A. endodermis
B. dermis
C. epidermis
D. hypodermis
Siemens is the SI unit of________?
A. Conductance
B. Resistance
C. Capacitance
D. Charge
Second layer of the Earth’s atmosphere is__________?
A. Stratosphere
B. Mesosphere
C. Troposphere
D. Thermosphere
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