What is the main function of the respiratory system?
select one:
a. supply oxygen to cells for cellular respiration
b. circulate blood through the blood vessels
c. rid the blood of water and metabolic wastes
d. decrease moisture stored in the blood and lungs

How does land development destroy ecosystems? it increases human carrying capacity too rapidly. it converts them into residential or agricultural areas. it forces humans to import non-native plants and animals. it expands the natural range of native wildlife species.

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

Where substance is produced during cellular respiration