1. the cell membrane is mainly made up of lipids and proteins. it acts as amazing
barrier to the surrounding environment. which of the following
statements about lipids best supports the argument that lipids
protect the contents of the cell?
a. lipids that are placed in water do not dissolve.
b. the tail of a lipid is made of carbon and hydrogen.
c. individual lipids in a membrane can rotate freely.
d. lipids are composed of a head and a thin tail.

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.

How do ratio scale and diagrammatic scale work

Alexa is preparing for a presentation by creating note cards identifying keywords that describe various features of each type of plate boundary. which words apply to all three of the convergent boundaries?