Shabbir added an unknown substance to a bottle of water and shook the bottle until the two substances were combined. Then he set the bottle aside for 30 minutes. When he came back, the unknown substance had settled on the bottom of the bottle, and the water had risen to the top. Based on Shabbir’s experiment, what can you tell about the unknown substance? A It is hydrophilic. B It is a type of oil. C It is hydrophobic. D It is a homogeneous solution.

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino

The distribution of related animals and plants across the world

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.