When compared with moms who had difficult deliveries ending in vaginal birth, women in the study who had cesarean deliveries said they had more problems getting pregnant after the birth of their first child.
Whale is the common name for a widely distributed and diverse group of fully aquatic marine mammals. They are an informal grouping within the infraorder Cetacea, excluding dolphins and porpoises, so to zoologists the grouping is paraphyletic.dontocetes feed largely on fish and squid. A few, like the sperm whale, feed on large invertebrates, such as giant squid. Grey whales are specialized for feeding on bottom-dwelling molluscs. Male whales typically mate with multiple females every year, but females only mate every two to three years.
What is a whale? Whales are marine mammals of order Cetacea which are neither-dolphin members, in other words, of the families delphinidea or platanistoidae-nor porpoises. they include the â¦ blue whale, the largest animal ever to have lived.hey do not release a fountain of water although it may look like that. What they are doing is exhaling. There will be some water in the way that gets blown upwards plus the h â¦ umidity of their breath in the cold air will cause a puff of water vapor.