The half-life of cobalt 60 is 5.3 years. What fraction of a sample remains after 21.2 years?

A.

one half

B.

one quarter

C.

one eighth

D.

one sixteenth

Which bone is not considered to be part of the cranium? sphenoid bone ethmoid bone lacrimal bone occipital bone?

An oxidation reaction A) Results in the loss of hydrogen atoms in most biologic systems. B) Adds electrons to a molecule. C) Increases the potential energy of a molecule. D) Allows conversion of ATP to ADP.

What types of food should be eaten in limitedquan?

Quincy has a dull, throbbing headache. His pain signals are carried by:

Why is oxygen needed by body cells

Which of the following precautions should be taken to reduce the risk of chromosomal mutations

Andrea is a biology major. She wants to know which industries are growing in the field of biology before she decides which courses to take next. Which resource would provide andrea with the best information?

In cellular respiration, the average amount of energy required to break the bonds of the reactants is 2,878 kcal/mol. However, a total of 3,564 kcal of energy is released during the formation of the bonds in the products. What can be concluded

which step in rock cycle occurs immediately befor sediments are laid down a. layers form b. heat and pressher are applided. c lava cools d. erosion breaks down rock

The blank theory of matter states that all particles of matter are in constant motion