If there were no patterns in nature everything would be complicated. Atoms and all the little things would be different meaning our body structures would be different and the plants would be different too.
The greatest difference in high and low tides occur during spring tides when the sun and moon are aligned
Answer:
directional selection, is a mode of negative natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.
The thicker and more muscular walls of arteries help them to withstand and absorb the pressure waves which begin in the heart and are transmitted by the blood which gives them higher blood pressure than veins
