Mr. Parker 31. Which of the statements below gives
the best definition of gas exchange?
a. Swapping oxygen for digested
food in the gut capillaries
b. Using energy to breathe
c. Exchanging inhaled air for
exhaled air in the lungs
d. Exchanging oxygen for carbon
dioxide in the lung alveoli

Which is an example of a population?

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

The activity of the modern sample is 1.10 bq . how long does that measurement take?