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The answer is C they slowly move apart
12 kWh.
The input energy = 36kWh divide by 0.75 = 48kWh
The lost energy = 0.25 x 48kWh = 12kWh
because 25% of input energy is lost to the surrounding.
Most fish fossils are: <u>D. from sharks, eels, and stingrays</u>.
<u>Explanation</u>:
A fossil is a preserved part or trace of a living being in the geological age. Animals, fish, bones and shells are some of the fossils. Fish fossils are the dead fish that are found under the river bed or ocean.
The dead animals in the water bodies are buried under the mud for long period of time. The soft tissues of the animals are decomposed leaving the dry bones.
There are five different types of fossils. They are
i) Body fossils
ii) Molds and casts
iii) Petrification fossils
iv) Footprints and trackways
v) Coprolites
One of the common fossils is shark tooth. The tooth of the sharks is shed continuously. The fish fossils are found at the bottom of the ocean, lake and pond deposits.
This is known as destructive interference. In fact, if the two waves (with the same amplitude) are shifted by exactly half a wavelength when they merge together, then the crest of one wave will match up perfectly with the trough of the other wave, and they will cancel each other out.
Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero. ... The dark regions occur whenever the waves destructively interfere.
