Cells can benefit from diffusion even though it occurs naturally without action from a cell. How can cells benefit from diffusion? Cells increase concentration of needed molecules such as oxygen.

Cells decrease concentration of waste molecules such as carbon dioxide.

Cells achieve balance with their environment to maintain equilibrium.

All of the above are correct.

Which of the following terms describes the layers of air surrounding the earth ?

According to a recent survey, the local government wants to classify people according to their income earning capacity. they want to do so in order to provide special facilities for the poor. who among the four individuals will be classified as poor? a. joseph earns $2.25 per day b. maria earns $1.50 per day c. rosita earns $2.00 per day d. tim earns $ 1.00 per day

What is a problem natives in both bolivia and peru face? a. extreme poverty c. discrimination b. limited access to resources d. all of the above