These two snowball earth events were previously considered together as the Varangian glaciation. They covered much, possible all, the Earth with ice . The root cause of the temperature drop may have been the removal of CO 2 from the atmosphere by photosynthesising bacteria and eukaryotes in the previous periods. Much else happened: the supercontinent Rodinia broke up, and another (Pannotia) began to form. Fossil steroids suggest the presence of early sponges , and amoeboid cells with tests (coverings) appear in the fossil record.
When it comes to skin care, we ask what caused skin tags or dark spots on the face, so we can prevent them. While the answer is known, unfortunately we have no control over the appearance of these skin blemishes. As we age we produce more melanin which creates the dark spots on face when we are exposed to sunlight. And skin tags are a result of several different conditions as listed earlier and with the exception of obesity, there’s not a lot of skin care we can utilize to prevent the formation of these issues. Dark spots on the face and skin tags can be corrected when we take the proper steps for removing skin tags and fading dark spots. If we get educated about good skin care and practice a good regimen we can always look in the mirror with some sense of pride knowing we eradicated all our skin blemishes to the best of our abilities.