Not all reefs in the past were formed by corals: those in the Early Cambrian (542â513 Ma) resulted from calcareous algae and archaeocyathids (small animals with conical shape, probably related to sponges) and in the Late Cretaceous (100â66 Ma), when there also existed reefs formed by a group of bivalves called rudists; one of the valves formed the main conical structure and the other, much smaller valve acted as a cap.
You can engage your child on the floor once your little one can support his or her head with the Bumbo Floor Seat in the Blue style. The seat enables your child to sustain a sitting position on the floor, so you can read to, feed and play with him or her safely. Low-density foam in the contoured seat is comfortable for your little one, and a three-point harness keeps him or her safe. You will love the lightweight, easy-to-clean design.
Booster seats make it possible for the lap belt to rest across the upper thighs instead of the child's vulnerable abdomen, and keeps its restraining force away from the abdomen by increasing the lap belt angle during a crash, according to the Insurance Institute for Highway Safety. You Might Also Like.ooster Seats. The underdeveloped body of a child is 59 percent more likely to be injured in an automobile accident when protected only by a lap and shoulder harness. Booster seats reduce the risk of injury to a child by raising a child up and giving her a shallow area to sit comfortably without slouching.