How can changes in a food chain be predicted?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols

Asegment id dna that is artificially created from two or more organism through use of dna enzymes in a laboratory is called a segment of dna that is artificially created from two or more organisms through use of dna enzymes in a laboratory is called