Hat is the significance of the evolution of hox gene clusters during vertebrate evolution?
a. novel hox genes coded for novel vertebrate features, such as jaws, limbs, and large brains.
b. duplicate hox genes triggered the formation of neural crest cells and allowed them to disperse throughout the body, forming a variety of structures.
c. duplication of hox genes made increased morphological complexity possible.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

answer: if she breaths she a thho

explanation:

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully