The reason why sharks can swim fast is that unlike most fish, sharks have tails that are not horizontally symmetrical . Instead , the top of a shark's tail protrudes further back than the bottom , giving the shark lift while swimming and making it "spring" forward at speed.
Most fish make a single water "ring" that moves backward at the end of their tail's stroke but sharks are thought to produce two rings because of their asymmetrical tail which bespeaks a more efficient propelling action.
It has also been discovered that sharks can raise the tiny teeth-like structures called placoid scales on their skin to create tiny wells across the surface of their skin which reduces drag just like the dimples on a golf ball, thus enabling the shark move forward faster.
The depletion of wilderness, opening up to the market
Explanation:
Cómo se organizan los participantes en un debateAquí le presentamos los pasos para organizar un debate:
1.- Elegir un tema de interés que produzca controversia
2.-Designar o invitar anticipadamente a los participantes de acuerdo 3.- Nombrar a un Moderador que coordine el desarrollo del debate. Es necesario la elaboración de un cuestionario con preguntas que generen controversia en los argumentos de los participantes.
4.- Se debe nombrar a un secretario que anote todas las ideas principales expuestas por cada participante.5.- De acuerdo al número de participantes, así como el tiempo que durará el debate podrá disponerse de 3 minutos para cada expositor o participante.
6.- Al final del debate el Secretario deberá exponer el resumen de las ideas de los expositores
espero y esto de ayude
Yes because they are still the same species so they can reproduce
Answer:
A forest full of money kinds of trees and grasses is examples of community
