Which of the following best describes the arrangement of objects in the universe? Stars are and evenly throughout space
O Stars are distributed individually and unevenly throughout space
O Stars are arranged in clumps called galaxies, and galaxies are evenly distributed throughout spac
Stars are arranged in clumps called galaxies, and galaxies are unevenly distributed throughout space

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled

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.