The rigth answer is D.
The wavefront or wavefront is an equal phase surface of a wave, i.e., these points have the same travel time from the source. The concept is used to describe the propagation of waves such as sound or electromagnetic radiation (light, radio waves, etc.). In a homogeneous and isotropic medium, in which the waves propagate without deformation, two types of particular waves are distinguished according to whether the wavefronts are spheres (spherical wave) or planes (plane wave).
I think the answer is (4) using large amounts of some materials that cannot be renewed :))
i hope this be helpful
* happy new year *
Four molecules of ATP are created from both lactic acid fermentation and alcoholic fermentation.
<span>C. Genes are located in a nucleotide because a Gene consists of a lot of </span><span><span>nucleotides </span></span>
