Because people and animals exhale carbon dioxide which plants need and they release oxygen
Answer:
Las tierras bajas están sustentadas principalmente por rocas que se erosionan con ... Valle, pero han sido separadas por la sección Gettysburg-Newark Lowland. ... que divide la provincia de Ridge y Valley de la meseta de Allegheny. ... rocoso hacia el noroeste, en la dirección de los glaciares en retirada.
Explanation:
the answer is line graphs.Line graphs can also be used to compare changes over the same period of time for more than one group. brainliest plzzz.
The Triassic follows the most important extinction occasion within the records of lifestyles, and so is a time whilst the survivors of that event spread and recolonized.The organisms of the Triassic can be considered to belong to certainly one of three businesses: holdovers from the Permo-Triassic extinction, new businesses which flourished in brief, and new agencies which went on to dominate the Mesozoic international.