Drill cores from the ocean floor were dated and found to be very young compared to the age of the earth. This means the crust had to be formed recently, which can be explained by creation of crust at a spreading center.
Answer:
Rain washes mineral ions from the land int water.
Explanation:
The amount of rain is highest at the equator and lowest at the poles. Due to this heavy amount of rain at the equator areas minerals get washed from land to the water. The washed minerals when be in the watery medium the either dissolve or dissociate to different ions according to their nature. The dissolution or dissociation of minerals in the water releases various salts in the medium and it becomes salty because of their presence in higher amounts.
Answer:
(a)False (b)False (c)False (d)False (e)False
Explanation:
a) Continuous time signal can also be digital. e.g continuous time square waveform (see first picture)
b) A discrete time signal can also be analog. e.g discrete time exponential function can take any value (see second picture)
c) When both energy and power of signal are infinite, it is neither power signal nor energy signal e.g ramp signals, 
signal
d)A signal of infinite length can also have finite energy. e. g
e)Step waveform u(t) is a power signal but also causal
Answer:
A Light Emitting Diode (LED) is a solid-state semiconductor device that converts electrical energy directly into light. On its most basic level, the semiconductor is comprised of two regions.
Explanation:
In the answer
Answer:
no lo sick parece efalso jhkr
Explanation:
