How many electrons does carbon lack in its outer shell? biochemistry

Glucose is broken down in different ways, both in the presence and in the absence of oxygen. using the table for reference, what major products are formed in each reaction set?

What function does a limb serve in each animal how are the limb bones of the four animal similar based on the similarities what can be inferred about the evolution of the poor animals

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic