Colent bondsted some are more stable by them

The Doppler effect- 3

Comic Microwave Background Radiation- 4

Particle Accelerators- 1

The Big Bang Theory- 2

Explanation:

the answer is: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.