Cual de los siguentes describe mejor la distribución de comunidades en una montaña alta? *

1 Los bosques perennes se encuentran hasta la zona limite de vegetación arbórea y no
hay vegetación por encima de este limite.

2 Varias comunidades podrían estratificarse de acuerdo con la altitud y terminar en un
campo de hielo en la cima de las montañas más altas

3 Al aumentar la altitud, los árboles altos se reemplazan por otros más bajos, y
finalmente por pastos

4 Comunidades semejantes a la tundra existen en la cima de las montañas más altas y
los desiertos se hallan en las elevaciones inferiores.​

Moving down the ramp from 6 meters to

Can someone pretty me with this ? it’s urgent. compare the three theories of emotion. here are the three theories of emotion. cannon-bard theory of emotion: the belief that both psychological arousal and emotional experience are produced stimultaneously ( at the same time) by the same nerve stimulus. james-lange theory of emotion: the belief that emotional experience is a reaction to bodily events occurring as a result of an external situation. ( “ i feel sad because i am crying.) schachter-singer theory of emotion: the belief that emotions are jointly determined by a nonspecific kind of psychological (bodily function) arousal and its interpretation, based on environmental ( natural surroundings) cues. which of these theories makes most sense to you? why. your response should be written using proper english spelling and grammar. and it needs to be 10 complete sentences.

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing