Which of the following best compares energy and nutrients?
A) Energy and nutrients flow one way through ecosystems.
B) Energy and nutrients both cycle within ecosystems.
C) Energy cycles within ecosystems, while nutrients flow only one way through ecosystems.
D) Energy flows one way through ecosystems, but nutrients cycle within ecosystems.
Question 2
Radon is an odorless radioactive gas that you cannot taste or see. Exposure to this naturally occurring gas can be dangerously high in any home in North America.
Homes must be specially tested for exposure levels for residents to understand their risks. If risks are high, venting systems can be installed to significantly lower indoor levels of exposure. The most likely health problem associated with long-term exposure to this radioactive gas is A) a stroke or heart attack.
B) lung cancer.
C) elevated blood pressure.
D) obesity leading to diabetes.
A Mitochondrion Converts Energy from Fuel Molecules into ATP
Relative Energy Consumption per Person for Selected Countries
Generating Energy from Glucose When your body needs to break down glucose
Energy Transfer
Formation and Flow of Lymph
Blood Flow to the Brain