1.A qué capa de la atmosfera se refieren las siguientes afirmaciones : a) la mayoria de los pequeños meteoritos que llegan a la Tierra se desintegran en esta capa de la atmosfera . b)La capa de ozono nos protege frente a la radiación ultravioleta.

The virus is considered to be are living item since they have hereditary material dnas or rnas. they can imitate and change. they respond to boosts, for example, radiation, chemicals, and warmth. they have antigenic properties. they are proficient to duplicate with a same hereditary constituent.

The answer is d i think