Look carefully at the figure below.Now,think why insects,reptiles and mammals might have appeared on the continents after plants.
A) There was not enough atmospheric oxygen for animals, etc., until the Devonian.
B) Land plants might have provided food and protection from the Sun.
C) There was not enough continental landmass until the Devonian Period.
D) The formation of banded-iron formations (BIFs) across the continents during the Silurian probably coincided with widespread iron poisoning of rivers and lakes

Question

Look carefully at the figure below.Now,think why insects,reptiles and mammals might have appeared on the continents after plants. 
A) There was not enough atmospheric oxygen for animals, etc., until the Devonian. 
B) Land plants might have provided food and protection from the Sun. 
C) There was not enough continental landmass until the Devonian Period. 
D) The formation of banded-iron formations (BIFs) across the continents during the Silurian probably coincided with widespread iron poisoning of rivers and lakes

Quizplus · Accepted Answer

Land plants provided food and protection from the Sun, which allowed animals to colonize the continents.

Look Carefully at the Figure Below