4. In an acidic solution a. concentration of H+ b. Concentration of OH- c. concentration of OH-> concentration of H+
d. concentration of OH-= concentration of H+

What is the next step in muscle contraction after the actin changes shape? (apex)

Construct at least two possible hypotheses for the student’s experiment.

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?