Which set of ecological organization levels is most likely to contain the largest variety of a species

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

Athermometer is placed in water in order to measure the water’s temperature. what would cause the liquid in the thermometer to rise?

Complete the possible outcomes for each generation in the pedigree chartaa aa aa