A. This is an example of bidirectional selection in which evolutionary pressures from multiple sources encourage an organism to adapt
The question is asking to choose among the following choices that describes about the Big Bang theories, base on my research and further investigation, I would say that the answer would be letter B. <span>The universe is expanding. I hope you are satisfied with my answer and feel free to ask for more </span>
Light waves are electromagnetic waves. Electromagnetic waves are waves which means that they are disturbances in a particular physical medium and result in oscillations, but they differ from all other waves because they consist of 2 waves oscillating perpendicular to each other.One of these waves is an oscillating magnetic field and the other is electric.
Electromagnetic waves are characterized with their wavelength (lambda).
No all electromagnetic waves are visible to humans. The visible spectrum is the light that we can see with our eyes is only a small fraction from the whole spectrum.
Form – A poem that follows a certain pattern - rhyme scheme or meter - or has a certain topic/focus, or all of the above. Haiku, limericks, sonnets, and sestinas are all forms of poetry that use conventional arrangements of meter and rhyme patterns.
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Hope this helps!