Which of the following was probably the least important factor in bringing about the Cambrian explosion?
A) the emergence of predator-prey relationships among animals
B) the accumulation of diverse adaptations, such as shells and different modes of locomotion
C) the movement of animals onto land
D) the origin of Hox genes and other genetic changes affecting the regulation of developmental genes
E) the accumulation of sufficient atmospheric oxygen to support the more active metabolism of mobile animals
The Trundholm Sun chariot pulled by a horse is a sculpture believed to be illustrating an important
The Reticular Activating System and Related Regions in the Brain Are Important Areas of Focus for D
Draw and label a diagram and explain how a factor-dependent transcription (rho-dependent) terminator
Hydrolysis reactions for some biochemically important phosphate compounds (part 2)
Access to clean drinking water is just as important as adequate nutrition for human health
How to factor completely