What is the purpose of astronauts exercising while in space? A. maintain homeostasis of the skeletal system
B. maintain a balanced diet
C. both A and B

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?