Alon
flock x
flocky
flock 2
total pieces of food eaten
(from previous pago)
123
food percentage
simulated number of birds in flock for 2nd generation
* divide each flock's total pieces of food by 300, the total number of pieces of food caten
** multiply the food percentage for each flock by the total number of birds (30)
done

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

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.