In the 1970s, the U. S. government passed laws to protect the water supply. Which of the following best describes something these laws were intended to
do?
A. Regulate the amount of pollution industries and cities are allowed
to produce
B. Regulate the amount of water U. S. households are allowed to use
each year
C. Regulate the amount of pollution U. S. households are allowed to
produce
D. Regulate the amount of water that can be pumped from aquifers
for irrigation

How can you approximate the number of calories required to keep you in energy balance?

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Which part of cellular respiration must occur before any of the other steps can occur