What is the basis for the difference in how the leading and lagging strands of dna are synthesized

How does oxygen move from the respiratory system to the circulatory system? a. by pumping through the heart b. by circulating in an artery c. by moving across a synapse d. by diffusion across a capillary wall

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

Describe the impact of deforestation of both abiotic and biotic factors within the tropical rainforest.