Fish rise and sink in water primarily using a swim bladder, which they inflate or deflate with oxygen to adjust their buoyancy. The swim bladder's volume changes allow the fish to displace different amounts of water, balancing the forces of buoyancy and gravity. Some fish, like sharks and ...
donned my little metal-tipped B.Z. heels, steadied myself on Chloe’s arm and the counter and made swiss cheese out of his bozo-balloons. I bounced, and jogged in place
you can go beyond just explaining it to them; you can actually have themmake some of their own blubberand test it out. After you've filled up a large bowl with ice water and let it sit for a few minutes to get really cold, have your kids dip a bare hand in and ...