Organisms are dependent on each other for the energy they need to survive.
photos (left to right) by mehmet karatay, jens buurgaard nielsen, furryscaly, and walter siegmundwhat would occur if the snake population is removed from the ecosystem pictured above?

Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+

Describe the two types of vascular tissue

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.