Why are cells generally so small? Select all of the answers that apply. A. As they grow, their volume increases faster than their surface area.
B. As they grow, their surface area increases faster than their volume.
C. Moving nutrients across their cell membranes is more efficient.
D. Moving waste materials across their cell membranes is more efficient.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

In which state was more than 100 billion tons of coal mined in 2005?

Which set of terms best describes a community of miners who live out in the countryside of west virginia and use specialized geological equipment to analyze the composition of rock?