Quadrilaterals, diagonal of a quadrilateral, types of quadrilaterals, rectangle, square, parallelogram, rhombus, trapezium, regular trapezium, kite, angle sum of a quadrilateral and applying properties of quadrilaterals to solve problems.
In fact whales are able to take in much more usable oxygen than land animals and humans. One estimate states that a whale may be able to store and use up to 90% of the oxygen they inhale. Whales are also able to shut down non essential functions in order to maximize the efficiency of their oxygen usage. Depending on the whales species whales have been known to hold their breath anywhere from 5 minutes up all the way up to 90 minutes during deep dives. Due to their consistent conscious effort to control their breathing whales are referred to as conscious breathers.
In order for a dolphin to dive into the water without worrying about inhaling water when it is submerged the muscles surrounding the dolphins blowhole contract to prevent the dolphin from accidentally taking in any unwanted water. As far as how long a dolphin can hold its breath varies depending on the species. Some dolphins can only hold their breath for a few minutes (3 â 7 minutes) while underwater, while other species have been known to hold their breath for over 20 minutes during deep dives. Most of what is known about a dolphins ability to hold its breath is from observations of their dives.