Which of the following is a characteristic of the actinides? O A. They are found abundantly in nature.
B. They have a full octet of valence electrons.
C. They are all radioactive.
O D. They do not react with anything.

it is important to conserve water because there is very limited amount of freshwater here on earth and if we are not smart about how we use it we will only be runnning out of our supply faster than neccessarry.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

c (diamond),

sio2 (quartz)