Answer:
The second one, Oxygen and Carbon Dioxide
Explanation:
La Biología Viene Siendo Una Ciencia Que Estudia El Origen De La Vida Si Evolucion Sus Propiedades Y Sud Cuidados También Describe las Características Y Comportamiento De Las Especies De Todo El Mundo
El turismo Biologico :Es Una Propuesta para El Viajero Interesado por Conocer Los Componentes Naturales De Algún Lugar Como La Fauna Y La Flora
Solid - definite shape and volume
Liquid - no definite shape but definite volume
Gas - no definite shape or volume
Plasma - high temperature physical state of matter in which atoms lose most of their electrons
Answer:
The middle part
Explanation:
We have rocks and metal on Earth.
<span>The current explanation for this is an endosymbiotic theory. It is believed that both, chloroplast and mitochondria were once prokaryotic cells (bacteria), living inside larger host cells. The host cells and bacteria formed endosymbiotic relationships long ago. Bacteria inside the host received protection. The aerobic bacteria (oxygen-using) helped the host to exploit O2 for extracting energy and through millions of years became mitochondria. The photosynthetic bacteria have provided crucial nutrients for the host and later became chloroplasts.</span>