The answer is D. two birds of the same or different species living in the same area
<span>Competition is an interaction between members of the same species or between different species living in the same area. If resources, such as food, water, sunlight, territory, are limited and several species depend on these resources, then, they must compete with the same or other species to gain the resources. </span>
They loosen up to be tighten again
Answer:
B. Rock Layers
Explanation:
The definition is a layer or a series of layers of rock in the ground.
Protein is a fat soluble vitamin
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).
